ANF II
Portable device for sound cleaning and
speech signals recording
STC-H474
Operating manual
Thank you for choosing the product of our company.
Before starting work with
ANF II thoroughly read this Operating Manual. If there are some questions concerning the use of
the product, please contact the Speech Technology Center technical support service:
E-mail
support@speechpro.com
Telephone
+7 (812) 325-8848, ext. 2
Fax
+7 (812) 327-9297
Internet
http://www.speechpro.com/
We welcome your feedback, questions and concerns regarding
ANF II.
If you have any questions concerning the use of this product, please contact Speech Technology Center’s technical support
service or your regional dealer.
The manufacturer retains the right to make amendments to this manual in connection with improvements made to
ANF II
design without special notification.
Any such amendments will be published in a new edition of the Gnome manual and on the company’s website:
http://www.speechpro.com.
No part of this document can be copied or reproduced in any manner without the written permission of the Speech Technology Center.
CONTENTS
INTRODUCTION .................................................................................................................................................................................... 3
General provisions ........................................................................................................................................................................................ 3
Operation instructions ................................................................................................................................................................................ 3
Typography conventions ........................................................................................................................................................................... 3
Copyrights ...................................................................................................................................................................................................... 4
Warranty .......................................................................................................................................................................................................... 4
1 DEVICE MAIN FEATURES ................................................................................................................................................................. 5
1.1 Purpose ..................................................................................................................................................................................................... 5
1.2 About the product ................................................................................................................................................................................. 5
1.3 Functions .................................................................................................................................................................................................. 5
1.4 Settings of recording and playback channels ................................................................................................................................ 6
1.5 Engineering data .................................................................................................................................................................................... 6
1.6 Power supply characteristics .............................................................................................................................................................. 6
1.7 Software requirements ......................................................................................................................................................................... 6
2 DESIGN PHILOSOPHY ...................................................................................................................................................................... 7
2.1 Device view .............................................................................................................................................................................................. 7
2.2 Device front panel ................................................................................................................................................................................. 8
2.3 Device back panel .................................................................................................................................................................................. 9
3 GETTING STARTED ......................................................................................................................................................................... 10
3.1 Power supply ......................................................................................................................................................................................... 10
3.1.1 Inserting batteries ................................................................................................................................................................................................ 10
3.1.2 Connecting the device to the external power supply .......................................................................................................................... 10
3.2 Memory card ......................................................................................................................................................................................... 11
3.2.1 Suitable memory cards ..................................................................................................................................................................................... 11
3.2.2 Removing write protection .............................................................................................................................................................................. 11
3.2.3 Inserting memory card ...................................................................................................................................................................................... 11
3.3 Connecting headphones ................................................................................................................................................................... 12
3.4 Connecting to digital inputs and outputs .................................................................................................................................... 12
3.5 Connecting to line outputs ............................................................................................................................................................... 12
3.6 Connecting to line inputs .................................................................................................................................................................. 12
3.7 Connecting to telephone line .......................................................................................................................................................... 12
3.8 Connecting to local network ............................................................................................................................................................ 13
3.9 Connecting to USB-port ..................................................................................................................................................................... 13
4 CONTROLS AND INDICATORS ................................................................................................................................................... 14
4.1 Controls ................................................................................................................................................................................................... 14
4.1.1 Power switch ..........................................................................................................................................................................................................
14
4.1.2 Navigation buttons ............................................................................................................................................................................................ 14
4.1.3 MENU button ......................................................................................................................................................................................................... 14
4.1.4 RECORD button .................................................................................................................................................................................................... 14
4.1.5 MONITOR button ................................................................................................................................................................................................. 14
4.1.6 Volume control ..................................................................................................................................................................................................... 14
4.1.7 Controls of the left and right channels ....................................................................................................................................................... 14
4.2 Indicators ................................................................................................................................................................................................ 14
4.2.1 LCD ............................................................................................................................................................................................................................. 14
4.2.2 Indicators of the recording level .................................................................................................................................................................... 15
5 MULTILEVEL MENU ....................................................................................................................................................................... 16
5.1 Multilevel menu structure ................................................................................................................................................................. 16
5.2 Navigation order in the multilevel menu ...................................................................................................................................... 17
5.3 SD-card menu ....................................................................................................................................................................................... 18
5.4 Settings menu ....................................................................................................................................................................................... 19
5.4.1 Audio settings ........................................................................................................................................................................................................ 19
5.4.2 Voice activation .................................................................................................................................................................................................... 22
CONTETS
5.4.3 Recorder timer menu ......................................................................................................................................................................................... 24
5.4.4 Overflow protection menu .............................................................................................................................................................................. 26
5.4.5 Security menu ....................................................................................................................................................................................................... 27
5.4.6 Date and time menu .......................................................................................................................................................................................... 28
5.4.7 Network settings .................................................................................................................................................................................................. 28
5.4.8 Other settings menu ........................................................................................................................................................................................... 31
5.5 Utilities menu ........................................................................................................................................................................................ 33
5.6 Filters ....................................................................................................................................................................................................... 36
5.6.1 Broadband noise filter ....................................................................................................................................................................................... 36
5.6.2 Harmonic reject filter .......................................................................................................................................................................................... 38
5.6.3 Equalizer .................................................................................................................................................................................................................. 38
5.6.4 De-clicker ................................................................................................................................................................................................................. 40
5.6.5 Speech level enhancer ....................................................................................................................................................................................... 41
5.6.6 Reference noise filter ........................................................................................................................................................................................... 41
5.6.7 V changer ................................................................................................................................................................................................................ 43
5.6.8 Presets ....................................................................................................................................................................................................................... 44
5.7 Lines selection menu .......................................................................................................................................................................... 45
6 OPERATION ..................................................................................................................................................................................... 47
6.1 Turning the device on ........................................................................................................................................................................ 47
6.2 Device general settings ...................................................................................................................................................................... 47
6.3 Sound recording .................................................................................................................................................................................. 48
6.3.1 Quick recording .................................................................................................................................................................................................... 48
6.3.2 Selecting sound source and recording settings ...................................................................................................................................... 48
6.3.3 Recording in the manual mode .................................................................................................................................................................... 48
6.3.4 Recording in the Voice activation mode ................................................................................................................................................... 49
6.3.5 Recording by timer .............................................................................................................................................................................................. 49
6.3.6 Recording process indication ......................................................................................................................................................................... 49
6.4 Playback of recorded audio files ...................................................................................................................................................... 50
6.4.1 Playback by device .............................................................................................................................................................................................. 50
6.4.2 Playback by PC ...................................................................................................................................................................................................... 50
6.5 Deleting audio records ....................................................................................................................................................................... 50
6.6 Shutting down the device ................................................................................................................................................................. 50
7 DEVICE CONTROLLING VIA PC ................................................................................................................................................... 51
7.1 Software requirements ....................................................................................................................................................................... 51
7.2 Connecting device to PC ................................................................................................................................................................... 51
7.2.1 Connection via USB ............................................................................................................................................................................................ 51
7.2.2 Connection through local network ............................................................................................................................................................. 51
7.3 Launching the application ................................................................................................................................................................ 51
7.4 Application main window tabs ........................................................................................................................................................ 52
7.5 SD-card tab ............................................................................................................................................................................................ 52
7.5.1 Cleaning recycle bin ........................................................................................................................................................................................... 54
7.5.2 Formatting SD-card ........................................................................................................................................................................................... 54
7.6 Information tab ..................................................................................................................................................................................... 55
7.7 Monitor tab ............................................................................................................................................................................................ 55
7.8 Filters tab ................................................................................................................................................................................................ 55
7.8.1 Broadband noise filter ....................................................................................................................................................................................... 56
7.8.2 Tone interference filter ....................................................................................................................................................................................... 56
7.8.3 Equalizer .................................................................................................................................................................................................................. 57
7.8.4 De-clicker ................................................................................................................................................................................................................. 57
7.8.5 Speech level enhancer ....................................................................................................................................................................................... 57
7.8.6 Stereo filter .............................................................................................................................................................................................................. 58
7.8.7 V-changer ............................................................................................................................................................................................................... 58
7.8.8 Presets ....................................................................................................................................................................................................................... 58
7.9 Settings tab ............................................................................................................................................................................................ 59
7.9.1 Audio settings ........................................................................................................................................................................................................ 59
7.9.2 Lines selection ....................................................................................................................................................................................................... 60
7.9.3 Voice activation .................................................................................................................................................................................................... 61
CONTETS
7.9.4 Recorder timer ....................................................................................................................................................................................................... 62
7.9.5 Overflow protection ............................................................................................................................................................................................ 63
7.9.6 Security ..................................................................................................................................................................................................................... 63
7.9.7 Date and time ....................................................................................................................................................................................................... 64
7.9.8 Network settings .................................................................................................................................................................................................. 64
7.9.9 Other settings ........................................................................................................................................................................................................ 65
7.9.10 Default settings .................................................................................................................................................................................................. 65
7.10 Journals tab ......................................................................................................................................................................................... 66
7.11 Firmware tab ....................................................................................................................................................................................... 66
7.12 Disconnecting device from PC ...................................................................................................................................................... 67
APPENDIX A ........................................................................................................................................................................................ 68
BROWSER SETTINGS FOR PROGRAM QUICK LAUNCH ..................................................................................................................... 68
A.1 Home page using ............................................................................................................................................................................... 68
A.2 Bookmarks usage ................................................................................................................................................................................ 69
A.3 Usage of the shortcut on the desktop.......................................................................................................................................... 69
APPENDIX B ........................................................................................................................................................................................ 70
CERTIFICATE ADJUSTMENT IN INTERNET EXPLORER ........................................................................................................................ 70
APPENDIX C ........................................................................................................................................................................................ 73
LIST OF COMPATIBLE MEMORY CARDS ................................................................................................................................................ 73
APPENDIX D ....................................................................................................................................................................................... 74
RECORDING RECOMMENDATIONS ........................................................................................................................................................ 74
INTRODUCTION
3
INTRODUCTION
General provisions
The document is intended for users of the ANF II portable device for sound processing and speech signals recording.
The manual describes operation, setting, and functions of the device.
Operation instructions
The device must be operated according to the manual.
After the exposure of the device to temperatures below 0° С during transport or storage, it is
necessary to store it at room temperature for 12 hours.
Microphones are the most vulnerable part of the device; avoid spilling fluid on microphones or inside the device. Do not use
or leave this product in any location subject to high humidity or dust.
Typography conventions
Font Meaning
Normal
Body text.
Italic
First appearance of a term. Meaning of the term is explained in the text or in the appendix.
Bold
Indicates names of construction and software components, names of controls and interface elements
(headings, buttons, etc.).
Bold Italic
Indicates file names and access paths.
The manual uses the following notification symbols:
Note: indicates important information that helps you make better use of the product.
Caution: informs you about potential problems with hardware or software.
Warning: warns you about potentially serious problems in certain situations and tells you how to avoid them.
INTRODUCTION
4
Copyrights
Microsoft, Windows, Windows® Internet Explorer® are trademarks of the Microsoft Corporation. The official Windows is the
abbreviation for Microsoft Windows Operating System. Windows XP is the abbreviation of Microsoft Windows XP Home
Edition/Professional.
Mozilla Firefox® is the registered trademark of Mozilla Corporation.
Opera® is the registered trademark of Opera Software ASA.
Google Chrome® is the registered trademark of Google.
Kingston® Technology is the registered trademark of Kingston® Technology.
Silicon Power® is the registered trademark of Silicon-Power Computer & Communications Inc.
Transcend® is the registered trademark of Transcend Information, Inc.
The logotypes
and represent Secure Digital (SD) and Secure Digital High Capacity (SDHC) memory
cards developed by Matsushita (Panasonic), SanDisk and Toshiba.
Warranty
Manufacturer guarantees conformance of the device to technical requirements on condition of observance by the customer
of operation conditions and rules, storage and transportation stipulated by operating documentation.
Device warranty period is 36 months from the day of its delivery to the customer.
Within the warranty period manufacturer undertakes to perform repair or replacement of the device in whole on condition of
observance by the customer of operation conditions and rules, device storage and transportation conditions.
Upon warranty period expiry, the manufacturer provides paid delivery of spare parts and accessories (SPTA). SPTA set and
delivery conditions during the service life of the product should be stipulated in contract.
DEVICE MAIN FEATURES
5
1 DEVICE MAIN FEATURES
1.1 Purpose
ANF II is a portable device for sound cleaning and speech signals recording, it is a professional audio-recording device for
two-channel record, processing and playback of speech signals. ANF II allows improving the quality and intelligibility of
speech signals, recorded and uploaded to removable memory card.
1.2 About the product
Name:
ANF II portable device for sound cleaning and speech signals recording
Model:
STC-H474
Producer:
Speech Technology Center Limited
Address:
Russia, St. Petersburg, Krasutskogo str. 4, PO 196084
Phone:
+7 (812) 325-88-48
Fax:
+7 (812) 327-92-97
For technical support:
support@speechpro.com
http://speechpro.com/support_form
1.3 Functions
Device provides the following functions:
1. Simultaneous two-channel recording of speech signals (audio track) using:
– Built-in microphones;
– External microphones;
– Line input;
– Phone line.
2. Playback of speech signals using:
– Headphones;
– Built-in dynamic;
– Line output.
3. Cyclic recording using free memory capacity (by circle).
4. Manual adjustment of the input signal level.
5. Operation from batteries and external power supply.
7. Use of filters to decrease speech signal distortion and simultaneously suppress different types of interference.
8. Use of filter to change the voice without possibility to restore it.
9. PIN code protection from the unauthorized access.
DEVICE MAIN FEATURES
6
1.4 Settings of recording and playback channels
Characteristics
Value
Recording channels number
2
Built-in microphones
Type
electret
Susceptibility level
- 55 dB
Noise floor
maximum 28 dB
Recording format
РСМ 16 and 24 bit without compression
РСМ 8 bit with compression according to µ-law
Sample rate
44.1 (CD Audio format), 16, 8 kHz
Harmonic distortion coefficient—recording through microphone input
(РСМ 24 bit, without compression), nominal level 1000 Hz
maximum 0.02 %
Harmonic distortion coefficient—recording through microphone input
(РСМ 24 bit, without compression), nominal level 1000 Hz
maximum 0.05 %
Signal-to-noise ratio — recording through line input (РСМ 24 bit, 44.1
kHz sample rate, without compression), nominal level 1000 Hz
minimum 105 dB
Signal-to-noise ratio—recording through microphone input (РСМ 24
bit, 44.1 kHz sample rate, without compression), nominal level 1000 Hz
minimum 85 dB
1000 Hz nominal level signal penetration in other channel —recording
(РСМ 24 bit, without compression)
maximum – 100 dB
Harmonic distortion coefficient—recording through line input (РСМ 24
bit, without compression), nominal level 1000 Hz, at 20 kiloohm capacity
maximum 0.02 %
Signal-to-noise ratio — recording through line input (РСМ 24 bit, 44.1
kHz sample rate, without compression), nominal level 1000 Hz, at 20
kiloohm capacity, in 20 Hz-22.05 kHz frequency band
minimum 106 dB
Dynamic range of recorded signals (without compression)
minimum 90 dB
Supported audio file formats
WAV, WSD, MP3
Data carrier
SDHC memory card
Data carrier capacity
to 32 GB
File system on the data carrier
FAT32
Audio file size
maximum 2 GB
1.5 Engineering data
Characteristics
Value
Weight, with batteries
maximum 1350 g
Product dimensions
213х139х76 mm
1.6 Power supply characteristics
Characteristics Value
Power supply source
batteries, external
Autonomous power supply set for alkaline or lithium LR6 batteries, standard size AA, each of
voltage of 1,5 V, piece
4
External power supply voltage
12…24 V
Power consumption (in recording mode)
6 W
Hours of service of the device in
operating mode powered by an
autonomous power supply set for
Energizer Ultimate Lithium AA
Connection type - USB, recording source - built-in
microphones, recording settings - 44,1 kHz, 24 bit, PCM,
stereo, filters - Broadband, Pulse, Equalizer
4 hrs
Connection type - USB, recording source - built-in
microphones, recording settings - 44,1 kHz, 24 bit, PCM,
stereo, filters - Broadband, Pulse, Equalizer
5.5 hrs
1.7 Software requirements
Characteristics
Value
PC connection
USB 2.0 ETHERNET
Web browser
Mozilla Firefox® 3 and later, Opera® 9.50 and later, Windows® Internet Explorer 7 and
later, Safari or Google Chrome
OS compatibility
Windows® XP, Windows® 7, Windows® 8
DESIGN PHILOSOPHY
7
2 DESIGN PHILOSOPHY
2.1 Device view
Figure 1 – Device view
The device consists of the following elements:
1 – Front panel of the device with controls;
2 – Cover of the batteries compartment;
3 – Built-in dynamic;
4 – Back panel with plugs.
1
2
3
4
DESIGN PHILOSOPHY
8
2.2 Device front panel
Figure 2 – Device front panel
There is the details about device elements on the front panel (see Table 1).
Table 1 – Labels of the elements on the front panel
№
Label Description
1 VOLUME L/R
Volume control. Left/right channel control
2
LCD (liquid-crystal display)
3
Navigation buttons
4
Return to the upper level of menu
5 MONITOR
Switch point-to-point channel on/off
6 RECORD
Switch recording on/off
7 LEFT CHANNEL
Left channel control
8
Left microphone
9 RIGHT CHANNEL
Right channel control
10
Level indicators of the signal in the right and left channels
11
1. BNF
2. HRF
3. EQ
4. SLE
5. DE-CLICKER
6. RNF
7. BYPASS
8. V-CHANGER
Filters:
1. Broadband filter
2. Harmonic reject filter
3. Equalizer
4. Speech level enhancer
5. De-clicker
6. Reference noise filter
7. Bypass
8. Voice changer
12
Flash memory card socket
13 HEADPHONES
Stereo socket ¼” for binaural headphones
14
Right microphone
7
1
2
3
4 5 6
8
9 10
11
12
14
13
DESIGN PHILOSOPHY
9
2.3 Device back panel
Figure 3 – Device back panel
There is the details about device elements on the back panel (see Table 2).
Table 2 – Labels of the elements on the back panel of the device
№
Label Description
15 S/PDIF IPUT
Digital input connector
16 S/PDIF OUTPUT
Digital output connector
17 FXO
Telephone connector
18 FXS
Telephone line connector
19
Grounding
20
Cover of the battery compartment with lock
21 12 – 24 V
External power unit connector
22 ON/OFF
Power switch
23
Indicator of exchange on the ETHERNET
24 ETHERNET
ETHERNET connector
25 LEFT ANALOG OUTPUT
TRS line out
26 RIGHT ANALOG OUTPUT
TRS ANALOG OUTPUT 6,35 mm (0,25 inches)
27 LEFT ANALOG INPUT
XLR/TRS ANALOG INPUT 6,35 mm (0,25 inches)
28 RIGHT ANALOG INPUT
XLR/TRS ANALOG INPUT 6,35 mm (0,25 inches)
29 USB
USB port
15
16
17
18
19
20
21
22
29 28 27
25 23
24
26
GETTING STARTED
10
3 GETTING STARTED
3.1 Power supply
3.1.1 Inserting batteries
To replace batteries, do the following:
1. Use the ON/OFF switch (figure 3, position 22) to turn off the device.
2. Open the cover of the batteries compartment (figure 3, position 20).
3. Remove old and place new batteries according to the polarity (figure 4).
4. Close the cover (figure 3, position 20).
5. Use the ON/OFF switch (figure 3, position 22) to turn on the device.
6. Check the software loading on the LCD.
Figure 4 – Batteries compartment. Inserting batteries
3.1.2 Connecting the device to the external power supply
Regulated power supply, with output voltage from12 to 24 V and allowable load current no less than 250 mА for 12 V and no
less than 125 mА for 24 V, is connected to 12-24 V socket (figure 3, position 19) on the device case. If the external power
supply is used, batteries supply will be automatically disabled.
Figure 5 – Socket for external power supply
You should use lithium batteries as an independent power supply.
Do not mix batteries of different types or from different manufacturers in one set.
To prevent the breakdown of the device, the socket (figure 5) of the direct current regulated source must have positive
potential on its central pin.
Use of third-party power source can damage the device. We recommend using the equipment from the delivery set.
The manufacturer is not responsible for device functioning when it is connected to third-party power source.
GETTING STARTED
11
3.2 Memory card
3.2.1 Suitable memory cards
Figure 6 – SDHC memory card
Recorded information is stored on removable nonvolatile SDHC (Secure
Digital High-Capacity) memory card with capacity up to 32 GB (figure 6).
For information storage, the FAT 32 file system is used.
You can find the list of compatible SDHC memory cards in appendix B.
3.2.2 Removing write protection
There is a LOCK switch on the left side card, which is used to prevent accidental information damage (figure 7).
To be able to write the information, slide the switch away from the LOCK position.
Figure 7 – Removing the write protection
3.2.3 Inserting memory card
After the
device is turned on and if memory card is not
inserted, in the lower part of the display
(figure 2, position 2
), you will see warning message
(figure 8).
Figure 8 – Insert memory card message
To insert memory card perform the following operations:
1. Use the ON/OFF switch to shut down the device (figure 3, position 20).
2. Remove the memory card protection (see p. 3.2.2).
3. Insert a card in the slot, watching the proper side (figure 10). Push the card in. You can hear a click when the card locks into
place.
4. Use the ON/OFF switch to turn on the device (figure 3, position 20).
After the device is turned on and the software is loaded,
you will see the message with the information about card
capacity and left space (figure 9) at the bottom part of the
screen (figure 2, position 2).
Figure 9 – Information about the card capacity and left space
Figure 10 – Inserting memory card
GETTING STARTED
12
3.3 Connecting headphones
You can use headphones to control the audio signal during the recording or playback. To connect the headphones use the
Headphones socket (figure 2, position 13), which is situated on the front panel of the device. The headphones must have
TRS cable (figure 11).
Figure 11 – Headphones socket
3.4 Connecting to digital inputs and outputs
Digital inputs and outputs are designed to interface with the systems of digital audio signals transmission using the S/PDIF
standard. To connect to the DIGITAL INPUT S/PDIF (Fig. 3, pos. 15) and to the DIGITAL OUTPUT S/PDIF (Fig. 3, pos. 16), the
cable fitted with the RCA header is used (Fig. 12).
Figure 12 – IPUT/OUTPUT sockets
Sampling rate applied to the input of signal should match the settings of the sampling rate on the device.
3.5 Connecting to line outputs
To connect the equipment to LEFT ANALOG OUTPUT and RIGHT ANALOG OUTPUT (figure 3, position 25 and 26) sockets,
use the TRS cable (figure 13).
Figure 13 – ANALOG OUTPUT sockets
3.6 Connecting to line inputs
To connect the equipment to LEFT ANALOG INPUT and RIGHT ANALOG INPUT sockets (figure 3, position 27 and 28), use
TRS (figure 14, А) or XLR cable (figure 14, B). XLR socket has a latch on the counterpart (figure 14, C). To unplug the cable use
the PUSH button.
А B C
Figure 14 – ANALOG INPUT sockets
3.7 Connecting to telephone line
Connection of the device to the telephone line is performed by breaking its connection with the telephone set. Connect the
telephone set to the FXO jack and the telephone line to the FXS jack (figure 3, position 17 and 18). Use standard TP-6P4C,
phone cable (figure 15). TP-6P4C phone cable has a latch. To unplug a cable, press on that latch.
Figure 15 – Jacks for a phone and phone circuit
GETTING STARTED
13
3.8 Connecting to local network
To connect the device to local network, use the ETHERNET jack (figure 3, position 24). For connection is used standard RJ45
cable (figure 16).
Figure 16 – Cable for connection to local network
RJ45 phone cable has a latch. To unplug a cable press on that latch.
3.9 Connecting to USB-port
You can connect the device to the PC through the USB port (figure 3, position 29). The connection is performed using the
standard 5-connector cable 1 to connect to the MiniUSB (5 connectors) devices and socket 2, which is connected to the USB-
port of the PC (figure 17).
Figure 17 – Cable for the connection to the PC
Before the connection of the device to the PC, make sure that PC-case is grounded. Ground connection is essential
if you use simultaneous connection of the device to the PC and external power supply and (or) external signal
source. Non-observance of these requirements can cause device breakdown.
To ground the device, use the ground terminal (figure
3, position 19).
CONTROLS AND INDICATORS
14
4 CONTROLS AND INDICATORS
4.1 Controls
4.1.1 Power switch
Use ON/OFF power switch (figure 3, position 22) on the back panel to turn power supply on and off. When the switch is set in
the ON position, the display will be turned on (figure 2, position 2).
4.1.2 Navigation buttons
Use navigation buttons , , , (figure 2, position 3) to move through the menu and select the proper menu
command or parameter within the limits of one level of menu multiple structure.
Press to set selected parameter or perform the selected menu command (including switching to the lower level of the
menu).
4.1.3 MENU button
Press the MENU button (figure 2, position 4) to go to the higher level in menu structure without saving any changes, if they
have not been saved by pressing .
4.1.4 RECORD button
Press the RECORD button (figure 2, position 6) to turn the recording mode on or off.
Press the RECORD button to begin the recording; it also turns on the backlit of the button. The recording process activity will
be indicated by the word RECORD and recording time at the left bottom corner of the display (figure 18).
Figure 18 – Recording process indication
4.1.5 MONITOR button
Press the MONITOR button (figure 2, position 5) to turn the listening of the point-to-point channel on or off.
Press the MONITOR button to begin the monitor; it also turns on the backlit of the button.
4.1.6 Volume control
Use VOLUME control (figure 2, position 1) to adjust volume level during audio records playback through the built-in speaker
or headphones. When the playback is turned on, you can see the adjusted volume settings (figure 19) at the bottom part of
the display (figure 2, position 2).
Figure 19 – Volume settings
4.1.7 Controls of the left and right channels
Use controls of left and right channels (figure 2, position 7 and 9) to set the required signal level on recording channels. If the
recording mode is on, you can see the adjusted signal levels for each channel (figure 20) at the bottom part of the display
(figure 2, position 2).
Figure 20 – Left and right channels value
4.2 Indicators
4.2.1 LCD
The LCD (figure 2, position 2) resolution is 176х220. On the display, you can see the information about device operation,
parameters, commands, and levels of the menu.
CONTROLS AND INDICATORS
15
You can see the LCD and main menu of the system in the figure 21.
Figure 21 – LCD and main menu
There are four sections of the LCD:
1 – In that section, you can see icons, which show parameters of the current
working mode.
2 – In that section, you can see parameters of current recording format.
3 – In that section, you can see main menu of the device and its mnemonic
match to five navigation buttons (figure 2, position 3).
Press the proper navigation button to see parameters and commands of the
lower level of the menu in parts 2 and 3.
When you open the Lines selection
menu, you can see icons of the currently
used inputs and outputs of the device.
4 – This part changes its content according to the working mode. Here, you
may see SD-card capacity (see figure 9); recording process and time (see
figure 18); amplification value during the recording (see figure 20) or
playback (see figure 19).
In the tables 3 and 4, you can see the information about icons, which are located in sections 1 and 3 and are used to indicate
parameters and working modes of the device.
Table 3 – Icons of the section 1
Icon Description Icon Description
Batch noise reduction is on
Current time
Voice activation is on
Headphones connected
Point-to-point channel is on
PIN code protection is active
Timer is on
External power source connected
Switching the channels during the playback (monitor or file) to the left/right/mix. The option is
available only if the sound comes through headphones/built-in dynamic. To adjust that parameter
press volume control.
Table 4 – Icons of the
Lines selection section
Icon Description Icon Description
Recording from line input
Playing to lines of digital output
Recording from digital input
Playback to external lines of line output
Record from telephone line
Playback to headphones/built-in speaker
4.2.2 Indicators of the recording level
Indicators of the recording level (figure 2, position 10) are two rows of LEDs (light-emitting diodes) on the front panel of the
device. The glow of certain green LEDs indicates relative value of the recording level. The glow of the last two LEDs indicates
the exceeding of normal signal level and possible distortion of recorded signal.
MULTILEVEL MENU
16
5 MULTILEVEL MENU
5.1 Multilevel menu structure
Using navigation buttons (figure 2, position 3), you can open the following menus (figure 22):
1. Filters–
2. Browse SD-card –
3. Settings –
4. Utilities –
5. Lines selection –
Figure 22 – Navigation buttons and menus
Use the MENU button (figure 2, position 4) to go back to the higher level of the menu. To return to the main menu, press this
button required number of times.
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5.2 Navigation order in the multilevel menu
In the figure 23 you can see an example of the navigation through the multilevel menu.
Press to open the Lines selection menu. Use and buttons to select the required menu command. For
example, Input source.
Press to open the Input source menu. Use and buttons to select the required output. For example, Internal
microphones. To confirm the selection, press .
After that, press the MENU button twice to return to the main menu.
Figure 23 – Example of navigation through multilevel device menu
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5.3 SD-card menu
The information is stored on the memory card in hierarchical structure.
In the process of the recording, the system automatically creates folders with names, which consist of the date when the
recording was started. For example, 2009-12-24.
Inside every folder in the process of the recording, the system automatically creates files with names, which consist of the
time of recording start. For example, 19-24-06.
Final file name can look, for example, as 2009-12-24_19-24-06.wav.
Files with results of the processing have the name, which looks as *_F. wav.
Use the Browse SD-card menu to browse SD-card content, listen to audio tracks, delete files with records, and send
them to recycle bin. To select the required file, perform the following operations (figure 24):
1. Press the button to open the Browse SD-card menu (position 1).
2. Press to open the catalogue and use and buttons (position 2) to select the folder with records, which were
recorded at the required date.
3. Press to open selected folder, use and buttons to select required file (position 3), press to open the
menu, which allows you to select operations for selected file.
Figure 24 – Selecting a file on SD-card
Operations with the selected file:
1. Play. Play a file. At the bottom part of the menu, you can see the slider, which displays the process of the playback. You
can see the elapsed time on the left, and the whole time of the recording on the right.
2. Clean and save. Process a file with the applied filters and saves the result. The list of the processed files is available in the
Utility-> Processing list.
3. Delete to recycle bin. Delete a file and move it to the recycle bin. The recycle bin stores all deleted files. Files may be
removed from the recycle bin by restoring them with a command or through the web-interface, or by deleting them
permanently (select Empty recycle bin in the Utilities menu).
You can select the required command using and buttons. To confirm your choice press .
Internal player can playback third-party .wav-files, recorded in PCM format with sample rates: 8000, 11025, 16000,
22050, 32000, 44100 and 48000 Hz.
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5.4 Settings menu
Use the Settings menu to control and set all required for playback and recording parameters.
To open the Settings menu (figure 25), press the button (figure 2, position 3).
Figure 25 – Settings menu
Use the Settings menu to set the following groups of parameters:
1. Audio settings (p. 5.4.1). Adjust recording parameters.
2. Voice activation (p. 5.4.2). Adjust voice activation parameters.
3. Recorder timer (p. 5.4.3). Adjust the timer.
4. Overflow protection (p. 5.4.4). Adjust the protection from the overflow.
5. Security (p. 5.4.5). Adjust security settings.
6. Date and time (p. 5.4.6). Adjust the time and date.
7. Network settings (p. 5.4.7). Adjust the network settings.
8. Other settings (p. 5.4.8).
9. Default settings. Restore default settings.
To select the required group use and buttons, to open the menu of the selected group, press .
5.4.1 Audio settings
Use the Audio settings menu (figure 26) to control and change current values of the recording parameters (parameters of
the recorded audio files). Current settings of the recording parameters are in grey.
Figure 26 – Audio settings menu
The Audio settings menu allows to set the following parameters:
1. Sample rate. Sampling rate: 8, 16, or 44.1 kHz. The higher the sampling rate, the
better quality of recording and the more space it requires.
2. Bit depth. 16 or 24 bits. The higher the bit depth, the better quality of recording,
and the more space it requires.
3. Compression. Method of compression, used to save recorded audio file: PCM or
µ-law.
4. Split files. Maximum length of audio recording. If the file length exceeds this
parameter, the file will be cut.
5. Channel mode. The way of saving two-channel stereophonic signal in audio file:
stereo means saving channels separately, mono means mixing both channels into
one.
6. Save files. It is possible to save either a source file or a file after noise
cancelation.
7. Restore recording. Enables or disables recording resume after device switching
off/switching on.
Select the parameter using and buttons, to open the menu, press .
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Setting sample rate
Figure 27 – Audio parameters. Sample rate
Sample rate
parameter defines the frequency of
signal sampling by its digitization.
Use and buttons to select the proper
value of the parameter: 8, 16, or 44.1 kHz.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
Setting bit depth
Figure 28 – Audio parameters. Bit depth
Bit depth defines the number of encoding bits.
and buttons allow to select the required
value of parameter: 16 or 24 bits.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
Setting compression method
Figure 29 – Audio parameters. Compression
Compression defines which compression method
is used to save the recorded audio file.
and buttons allow to select the required
parameter: PCM or µ-law.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
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Setting split files
Figure 30 – Audio parameters. Split files
Split files defines maximum length of audio record.
and buttons allow to select the required
parameter: 15 or 30 minutes; 1, 3 or 5 hours.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
Channel mode
Figure 31 – Audio parameters. Channel mode
Channel mode defines way of saving two-channel
signal in audio file.
and buttons allow to select the required
parameter: stereo
means saving channels
separately, mono means mixing both channels into
one.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
Save files
Figure 1. Audio parameters. Save files
Save files menu allows you to select the audio
records saving mode.
and
buttons allow to select the
required parameter:
Original. Save source files.
Cleaned. Save files after noise reduction
Both. Save both files.
Press
to save the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
Only signals (original and cleaned signals) with 8 kHz sampling rate can be recorded simultaneously.
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Restore recording
Figure 32 – Audio parameters. Restore recording
Restore recording menu
enables or disables
recording resume after device switching off and
then switching on.
and
buttons allow to select the
required parameter:
Disabled. Disables recording resume.
Enabled. Enables recording resume.
Press
to save the selected value of the
parameter.
Use the MENU button to return to the Audio
settings menu without saving any changes.
5.4.2 Voice activation
Voice activation
Figure 33 – Voice activation
In the Voice activation menu you can set the
following parameters:
1. State. Turn the voice activation on or off.
2. Start threshold. Signal level,
at which the
voice activation is turned on.
3. Start delay. Time of the start delay.
4. Stop threshold. Signal level,
at which the
voice activation is turned off.
5. Stop delay. Time of the stop delay.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Voice
activation menu without saving any changes.
State
Figure 34 – Voice activation. State
State allows you to turn the voice activation on
or off.
and buttons allow to select the required
state.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Voice
activation menu without saving any changes.
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Setting start threshold
Figure 35 – Voice activation. Start threshold
Start threshold
defines the level of the input
signal (in dB), the exceeding of which starts the
recording.
and buttons allow to select the required
parameter in a range from 0 to 72 dB with 1 dB
pitch.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Voice
activation menu without saving any changes.
Setting start delay
Figure 36 – Voice activation. Start delay
Start delay defines the time of recording delay
when the voice activation starts.
and buttons allow to select the required
parameter in a range from 30 to 200 ms with
10 ms pitch.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Voice
activation menu without saving any changes.
Setting stop threshold
Figure 37 – Voice activation. Stop threshold
Stop threshold
defines the minimum level of
input signal (in dB). If the signal level becomes
lower than that value, the recording will stop.
and buttons allow to select the required
parameter in a range from 0 to 72 dB with 1 dB
pitch.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Voice
activation menu without saving any changes.
Stop threshold value must be lower than Start threshold value.
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Setting stop delay
Figure 38 – Voice activation. Stop delay
Stop delay defines the period (in ms) from the
moment when voice activation
stops the
recording, till the end of the recording.
and buttons allow to select the required
parameter in a range from 500 to 10000 ms with
500 ms pitch.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Voice
activation menu without saving any changes.
5.4.3 Recorder timer menu
Recorder timer
Figure 39 – Recorder timer
In the Recorder timer menu you can change the
following parameters of the timer:
1. State. Turn the timer on or off.
2. Start time
. Date and time of the recording
start.
3. Recording duration
. The duration of the
continuous record.
4. Schedule. The schedule of the recording start.
To select the parameter use and
buttons.
To open possible values of selected
parameter press .
State
Figure 40 – Recorder timer. State
State allows you to turn the timer on or off.
and buttons allow you to select the
required state.
Press to save the selected state of the timer.
If the timer is on, you will see the
icon.
Use the MENU button to return to the Recorder
timer menu without saving any changes.
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Start time
Figure 41 – Recorder timer. Start time
Start time
defines the date and time of the
recording start.
Use and buttons to select the field you
want to change.
Use and buttons to increase or decrease
the value of the field.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Recorder
timer menu without saving any changes.
Recording duration
Figure 42 – Recorder timer. Recording duration
Recording duration defines the duration of the
continuous recording.
Use and buttons to select an alterable
field.
Use and buttons to increase or decrease
the value of the field.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Recorder
timer menu without saving any changes.
Schedule
Figure 43 – Recorder timer. Schedule
Schedule defines single or every
day timer
activation.
Use and
buttons to select required
schedule.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Recorder
timer menu without saving any changes.
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5.4.4 Overflow protection menu
Figure 44 – Overflow protection menu
In the Overflow protection menu you can turn
on or off the following methods of protection
from overflow:
1. Auto delete old files
2. Auto empty recycle bin
To select a parameter use and buttons.
To open possible values of selected parameter
press .
Auto delete old files
Figure 45 – Overflow protection. Auto delete old files
Use Auto delete old files to automatically delete
the oldest records when the card memory is full
(less than 50 MB left).
Use and buttons to select the required
state.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Overflow
protection menu without saving any changes.
Auto empty recycle bin
Figure 46 – Overflow protection. Auto empty recycle bin
Use Auto empty recycle bin to automatically
clean the recycle bin when the card memory is
overflow.
Use and buttons to select the required
state.
Press to save
the selected value of the
parameter.
Use the MENU button to return to the Overflow
protection menu without saving any changes.
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5.4.5 Security menu
Security
Figure 47 – Security
In the Security menu there are three commands
available:
1. Autolock buttons
. Lock the navigation
buttons.
2. PIN code protection. In active state to unlock
buttons you will need to enter the PIN.
3. Change PIN code. Edit (change) the PIN.
To select a parameter use and buttons.
To open possible values of selected parameter
press .
Setting autolock buttons
Figure 48 – Security. Autolock keyboard
Use Autolock buttons
to set the period of time
without any user activity after which buttons and
controls automatically will be locked
Use and
to select required value of
parameter.
Press to save
the selected value of the time
and date.
Use the MENU button to return to the Security
menu without saving any changes.
To disable the lock press and buttons
one after another. The RECORD button is never
locked.
Setting PIN code protection
Figure 49 – Security. PIN code protection
PIN code protection allows you to make the device
ask a user to enter the PIN to unlock buttons.
Use and buttons to select required state.
Press to save the selected state.
Use the MENU button to return to the Security
menu without saving any changes.
If PIN code protection is activated you will see a
warning message every time
you try to unlock
buttons. To enter the PIN, perform same operations
as for its changing (see the information below).
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Changing PIN
Figure 50 – Security. Change PIN code
Change PIN code allows you
to change the PIN.
Enter the old PIN in the first text box and the new
one in the second text box. Use and
buttons to select number position.
Use and buttons to increase or decrease
selected number.
Press to save the selected PIN.
Use the MENU button to return to the Security
menu without saving any changes.
5.4.6 Date and time menu
Use the Date and time menu to control and change the date and time on the clock of the device (figure 51).
Date and time
Figure 51 – Date and time
Use and buttons to select the alterable
field of date or time.
Use and buttons to increase or decrease
selected value.
Press to save the selected value of the time
and date.
Use the MENU button to return to the Settings
menu without saving any changes.
5.4.7 Network settings
Network settings
Figure 52 – Network settings menu
In the Network settings menu you can change
the following parameters:
1. USB – configure the device when it is
connected via USB-port and the ability to change
the settings.
2. Ethernet – network settings of the device
when it is connected to the PC through the
Ethernet.
To select a parameter use and buttons.
To open possible values of selected parameter
press .
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USB-connection settings
Figure 53 – Network settings menu. USB
The USB parameter allows to check and change
settings of the device when it is connected to the
PC through the USB-port.
To select value use and buttons. To go
from one field to another use and
buttons. Press to save the selected value.
When connecting the device to a PC
running Microsoft Windows 7 OS, it is
recommended to set on the device IP
address for the USB interface
in the
range 169.254.xxx.xxx
with a subnet
mask 255.255.0.0.
Ethernet-connection settings
Figure 54 – Network settings menu. Ethernet
The Ethernet parameter allows to check and
change network settings of the device when it is
connected to the PC through the Ethernet port.
You can change the following parameters:
1. Obtain IP-address.
2. IP address.
3. Subnet mask
4. Default gateway
5. DNS
To select a parameter use and buttons.
To open possible values of selected parameter
press .
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Obtain IP-address
Figure 55 – Network settings menu. Ethernet. Obtain IP address
The Obtain IP-address parameter allows to
check and change the way of the IP-address
obtaining.
1. Manually – set the IP-address manually.
2. Automatically – the IP-address is obtained
automatically. It is used if the system has the
DHCP-server and computers obtain addresses
automatically.
To select a parameter use and buttons.
Press to save the selected value
IP-address
Figure 56 – Network settings menu. Ethernet. IP-address
The IP-address parameter allows to check and
change the IP-address of the device.
To select value use and buttons. To go
from one field to another use and
buttons. Press to save the selected value.
Subnet mask
Figure 57 – Network settings menu. Ethernet. Subnet mask
The Subnet mask parameter allows setting the
subnet mask.
To select value use and buttons. To go
from one field to another use and
buttons. Press to save the selected value.
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Default gateway
Figure 58 – Network settings menu. Ethernet. Default gateway
The Default gateway allows setting the address of
the default gateway.
To select value use and buttons. To go
from one field to another use and
buttons. Press to save the selected value.
DNS
Figure 59 – Network settings menu. Ethernet. DNS
The DNS parameter allows setting the address of
the DNS-server.
To select value use and buttons. To go
from one field to another use and
buttons. Press to save the selected value.
5.4.8 Other settings menu
Other settings
Figure 60 – Other settings
In the Other settings menu you can change the
following settings:
1. Display backlights . Control display
backlights.
2. Buttons LEDs. Control buttons LEDs.
3. USB mode. Select the mode
of connecting
device to the PC via USB.
To select the parameter use and
buttons.
To see possible values of selected parameter,
press .
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Display backlights
Figure 61 – Other settings. Display backlights
Display backlights sets the time of the display
backlights from the moment of the last press of
any navigation button.
Use and buttons to select the required
value.
Press to save the selected value.
Use the MENU button to return to the Other
settings menu without saving any changes.
The backlit will be turned on after the first press
of any button (the function of the button will not
be performed).
Buttons LEDs
Figure 62 – Other settings. Buttons LEDs
Buttons LEDs allows to turn on or off indicators
of the recording level and buttons LEDs (see
figure 2, position 10).
Use and buttons to select the required
state.
Press to save the selected state.
Use the MENU button to return to the Other
settings menu without saving any changes.
USB mode
Figure 63 – Other settings. USB mode
The USB mode item
defines the type of
connection to the PC – as a memory card or with
the ability to control it through a web-browser.
Use and to select the required mode.
Press to save the selected state.
Use the MENU button to return to the Other
settings menu without saving any changes.
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5.5 Utilities menu
To open the Utilities menu (figure 64) select the
button in main menu.
Figure 64 – Utilities menu
The Utilities menu allows to perform the following operations:
1. Lock buttons. Lock buttons to prevent them from being
accidentally pressed.
2. Empty recycle bin. Clean the recycle bin.
3. Processing list. The list of files queued for processing.
4. Format SD-card. Format memory card.
5. Errors log. View errors log.
6. Information. View the information about the device.
To select required utility use and buttons. To activate a
utility, press . Use the MENU
button to return to the
Utilities menu without saving any changes.
Locking buttons
Figure 65 – Utilities menu. Lock buttons
Use the Lock buttons utility to lock all buttons of
the device (besides the RECORD button) from
being accidentally pressed.
Use and buttons to run the utility or to
deactivate it.
Press to save the choice.
Use the MENU button to return to the Utilities
menu without saving any changes.
If buttons are locked,
there will be a warning
message about it.
Cleaning recycle bin
Figure 66 – Utilities menu. Empty recycle bin
Use the Empty recycle bin utility to completely
delete files from the recycle bin and memory
card.
Use
and buttons to run a utility or to
deactivate it.
Press to save the choice.
Use the MENU button to return to the Utilities
menu without saving any changes.
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Processing list
Figure 67 – Utilities menu. Processing list
Use the Processing list utility to view the list of
files queued for processing. Every file is
processed according to the filter settings, which
were set when a file was sent to the processing.
Use
and buttons to run a utility or to
deactivate it.
Press to save the choice.
Use the MENU button to return to the Utilities
menu without saving any changes.
SD-card formatting
Figure 68 – Utilities menu. Format SD-card
Use the Format SD-card utility to format the
memory card.
Use
and buttons to run a utility or to
deactivate it.
Press to save the choice.
Use the MENU button to return to the Utilities
menu without saving any changes.
Safely remove SD-card
Figure 69 – Utilities menu. Format SD-card
“Safely remove SD-card” utility allows removing SD-card while
the device is turned on. After choosing this utility the message
“SD-card can be removed” will appear at the bottom of the
screen.
Now SD-card can be safely removed.
While the device is in operation SD-
card can be
removed only using “Safely remove SD-card” utility.
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Errors log
Figure 70 – Utilities menu. Errors log
Use the Errors log utility to view error messages.
Use
and buttons to move through the
log.
Use the MENU button to return to the Utilities
menu without saving any changes.
Information
Figure 71 – Utilities menu. Information
Use the Information utility to check the
information about the device.
Here you can find current date, device serial
number, software version, IP-address, and
recording parameters.
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5.6 Filters
Figure 72 – Filters menu
Use the Filters
menu to adjust filters and presets. To begin
working with filters select Settings (figure 72).
5.6.1 Broadband noise filter
The menu of the broadband noise filter is available in the Filters menu (figure 73).
Figure 73 – Filters menu. Broadband noise filter. State
The broadband noise filter increases the comfort of the speech signal perception, improves its quality and intelligibility in
conditions of the permanent broadband noise. The filter has the following adjustable parameters:
Figure 74 – Broadband filter. Suppression
State (see figure 73). Turn the filter on or off.
Suppression (figure 74). Set the required depths
of the noise cancellation. The noise cancellation
can have the following values: 3, 6, 9, 12, 15, 18,
and 21 dB.
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Figure 75 – Broadband filter. Reverberation
Reverberation (figure 75).
Use this mode in
resonant and reverberating rooms. It can also be
useful in unsteady noise conditions (on the street
or in the conditions of background music).
Figure 76 – Broadband filter. Rumble filter
Rumble filter (figure
76). Use this mode if the
major part of the noise is low-band noise (up to
2 kHz).
Figure 77 – Broadband filter. Subtracted signal
Subtracted signal (figure
77). Use this mode if
you need to find out, which part of the speech
signal is contained in the subtracted signal. The
mode is also usef
ul for the background
conditions control.
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5.6.2 Harmonic reject filter
The menu of the harmonic reject filter is available in the Filters menu. The filter can be disabled or enabled (figure 78). The
harmonic reject filter increases the comfort of the speech signal perception, improves its quality and intelligibility in
conditions of tonal interference.
Figure 78 – Filters menu. Harmonic reject filter. State
Figure 79 – Harmonic reject filter. Buzz
Buzz (figure. 79) – the mode is used for power
supply hum reduction (50, 60 Hz), in case it still
takes place after applying harmonic reject filter.
The mode works most effectively with sampling
rates up to 16 kHz.
5.6.3 Equalizer
The equalizer menu is available in the Filters menu (see figure 80).
Figure 80 – Filters menu. Equalizer
The equalizer increases the comfort of speech
signal perception, reduces spectral mask, increases
intelligibility of speech in narrowband channel, and
reduces permanent narrowband interference (for
example, machinery noise). The equalizer has the
following parameters:
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Figure 81 – Equalizer menu. Equalizer state
State (figure
81). Turn the equalizer on or off.
Figure 82 – Equalizer menu. Equalizer type
Type
Parametric Equalizer (figure
82) allows increasing
or reducing
a signal in a range of low or high
frequencies. You can adjust parametric equalizer
using control parameters.
Adaptive Equalizer (figure
82
) automatically
brings average signal spectrum to the average
speech spectrum.
Figure 83 – Equalizer menu. Low Frequency
Low Frequency (Hz) (figure
83
). Threshold
frequency of signal increase/decrease in the range
of low frequencies.
Figure 84 – Equalizer menu. High Frequency
High Frequency (kHz) (figure
84
). Threshold
frequency of signal increase/decrease in the range
of high frequencies.
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Figure 85 – Equalizer menu. High gain, Low gain
Low gain, High gain (dB) (figure
85) –
ratio of
signal increase/decrease (dB/octave) in the range of
low, high frequencies.
5.6.4 De-clicker
The menu of the De-clicker is available in the Filters menu (figure 86).
Figure 86 – Filters menu. De-clicker
Figure 87 – De-clicker menu. Threshold
Use the De-
clicker to reduce single impulses and
clicks, created by numerous impulses. The filter has
the following parameters:
State. Turn the filter on or off (see figure
86).
Threshold (dB) (figure
87
). The parameter, which
regulates the sensitivity of impulse detection (from
weak to strong). When the sensitivity increases, the
speech signal smoothing increases too.
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5.6.5 Speech level enhancer
The speech level enhancer automatically increases comfort of the speech signal perception and improves its intelligibility by
adjusting levels of loud and quiet (far and near) speaker. To turn or off the speech level enhancer use the menu figure 88.
Figure 88 – Reference noise filter menu. Speech level enhancer
5.6.6 Reference noise filter
Figure 89 – Filters menu. Reference noise filter
Reference noise filter performs interference
suppression in reference channel. The menu of the
reference noise filter is available in the Filters menu
(figure 89).
Reference noise filter increases the comfort of the
speech signal perception and improves its quality
and intelligibility in conditions of unsteady noise
created by the source of the acoustic interference. It
uses the signal of interference (reference channel)
to subtract the noise out of the reference channel
signal. The filter has the following parameters:
Figure 90 – Reference noise filter menu. State
State. Reference noise filter can be turned on or off
(figure 90).
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Figure 91 – Reference noise filter menu. Reference channel
Reference channel (right or left) (figure 91). The
parameter, which allows selecting
a channel,
containing speech of the required speaker as a
reference channel (channel, which comes from the
noise source).
Figure 92 – Reference noise filter menu. Delay
Delay (ms) (figure 92). The parameter, which allows
compensating the delay of the noise acoustic way
(33 cm/ms or 13 inches/ms) from the noise source
to the microphone of the reference channel.
Figure 93 – Reference noise filter menu. Suppression
Suppression (dB) (figure 93). The parameter, which
sets the required depth of interference suppression
in the reference channel.
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5.6.7 V changer
Figure 94 – V-changer menu. State
Use the V-changer to change speaker’s voice with
no possibility to restore the original voice. The vchanger can change the voice in the real-time mode
in the point-to-
point channel and for existing
records.
V-changer is not working simultaneously with noise
filters.
The filter has the following parameters:
State. The v-
changer can be turned on or off
(figure 94).
Figure 95 – V-changer. Voice pitch
Voice Pitch (figure 95
). The parameter, which
changes the rate of the pitch duration in a range
from -0.5 to 2 with the 0.1 pitch. Decrease the rate in
order to make the speaker’s voice lower and
increase it to make the voice higher.
Figure 96 – V-changer. Voice distortion
Transformation (figure 96). The parameter, which
changes the rate of the speaker’s
voice tract
formants conversion in a range -0.2 to 0,2 with the
0.01 pitch. Positive rate decreases the values of the
formant frequenc
ies relative to original voice. To
increase values of the formant frequencies set the
negative rate. Changing of the parameter in any
direction relative to the zero provides impossibility
of the original speaker’s voice restoration.
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5.6.8 Presets
Figure 97 – Filter menu. Selecting Presets
Presets are filter settings for particular work conditions. Default presets
has the “!” mark in the beginning of their names (for example, “!Street
noise”) and cannot be deleted or edited.
You can also save your own settings of filters as presets. To select a
preset go to the Filters menu (figure 97).
Figure 98 – Presets
The list of default presets you can find in the Presets menu (figure 98).
Figure 99 – Applying preset
To set the particular preset, find it in the Presets menu and select
Apply (figure 99).
Figure 100 – Saving preset
To save the created preset, select Save as preset, enter the name of
the preset and save it. You can see the created preset in the list of all
presets (figure 100).
Created preset can be applied, renamed, or deleted.
MULTILEVEL MENU
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5.7 Lines selection menu
The Lines selection menu (figure 101) is used for input and output lines control. To open the menu, press (figure 2,
position 3).
Figure 101 – Lines selection menu
In the Lines selection menu, you can change the following parameters:
1. Input source. Select the Input source: built-in microphones, line input, phone line
2. Monitor. Select the output by playback: line output, speaker/headphones.
3. Analog input mode. Turn on the analog input mode.
4. Analog input signal. Select stereo signal output: one of the channels or both of them.
To select the required parameter, use and buttons, to open the parameter values, press . Use the MENU button
to return to the Lines selection menu without saving any changes.
Input source selection
Figure 102 – Lines selection menu. Input source
The Input source parameter is used to select one
of the recording sources.
Use and buttons to select the required
recording source.
Press to save the selected parameter.
Use the MENU button to return to the Lines
selection menu without saving any changes.
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Monitor
Figure 103 – Lines selection menu. Monitor
The Monitor
parameter is used to select the
monitor.
Use and buttons to select the required
recording source.
Press to save the selected parameter.
Use the MENU button to return to the Lines
selection menu without saving any changes.
Analog input mode
Figure 104 – Lines selection menu. Analog input mode
The Analog input mode parameter allows to set
the type of the signal source, connected to the
line output: microphone or linear.
Use and buttons to select the required
recording source.
Press to save the selected parameter.
Use the MENU button to return to the Lines
selection menu without saving any changes.
Analog input signal
Figure 105 – Lines selection menu. Analog input signal
The Analog input signal parameter allows to set
the way of signal from source transfer:
– Differential – by three lines
– Asymmetrical – by two lines
Use and buttons to select the required
recording source.
Press to save the selected parameter.
Use the MENU button to return to the Lines
selection menu without saving any changes.
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47
6 OPERATION
6.1 Turning the device on
Before you turn on the device, prepare it according to the recommendations from the part 3.
To turn on/off the device use the ON/OFF switch (figure 3, position 22).
The process of the software loading will be displayed by the indicator at the bottom part of the display (figure 106). Wait,
until the appearance of the main menu on the display (see figure 21).
Figure 106 – Process of software loading
6.2 Device general settings
Before you start working with the device, perform the following operations:
1. Format the memory card, if you did not do it, according to the p. 5.5.
2. Set current date and time, if you did not do it, according to the p. 5.4.6.
3. Set, if it is necessary, button lock and PIN-protection, according to the p. 5.4.5.
4. Check other settings, according to the p. 5.4.8.
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6.3 Sound recording
6.3.1 Quick recording
For quick audio recording, perform the following operations:
1. Install batteries or connect the device to power source.
2. Insert formatted memory card.
3. Press the RECORD button (figure 2, position 6).
4. Perform the recording with default settings.
5. Stop the recording by pressing the RECORD button again.
6.3.2 Selecting sound source and recording settings
If the recording conditions do not coincide with default conditions, perform the following operations:
1. Select the Input source, according to the p. 5.7, taking in account the following details:
• Built-in microphones allow to record without additional microphones.
• Linear input is used for analog signal input from line outputs of the other devices or from the outer microphone.
• Telephone circuits can be connected as parallel or as series circuits. The recording is performed not considering
analog signaling.
2. Set necessary recording settings according to the p. 5.4.1.
You can see the example of setting 16 kHz sample rate in the figure 107.
Figure 107 – Example of sample rate setting
6.3.3 Recording in the manual mode
To start the recording press the RECORD button (see figure 2, position 6), which in the process of recording is glowing red.
Figure 108 – Recording level LED indicators
The level of
the recorded signal is displayed by LED
(figure 108) for every channel separately (see figure 2,
position 10). Left channel is on the left, right channel is on
the right.
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Figure 109 – Indication of recording level on the display
In the process of recording,
you can change recording
level using Recording level
controls for every channel
separately (see figure 2, position 7, and position 9).
When you use Recording level
controls, recording
parameters can change in a range from 0 to 60 dB. You
can see those parameters at the bottom part of the screen
(figure 109).
Manually adjusted Recording level must provide sufficient level for minimum input signal recording (if the input signal level
is minimum, at least one green LDE will glow) and absence of substantial distortion at the maximum level of the input signal
(if the input signal level is maximum, red LED will rarely blink).
To start the recording press the RECORD button again.
6.3.4 Recording in the Voice activation mode
To start and pause the recording you can use the Voice activation mode. In that case, if the RECORD (red-glowing) button is
pressed (see figure 2, position 6) only those signals will be recorded, level of which is higher than adjusted activation
threshold.
You can find the information about voice activation and its settings (start and stop thresholds, and start and stop delays) in
p. 5.4.2.
In case of monophonic audio recording, activation threshold is set only for one (left) channel.
That mode is also compatible with the recording-by-timer mode.
6.3.5 Recording by timer
The recording by timer is performed if the manual control of the recording process is impossible or inconvenient. Built-in
device timer allows performing single or daily recordings at the preset time.
The information about the recording by timer and timer settings (date and time of the recording start and the length of
continuous recording) you can find in the p. 5.4.3.
6.3.6 Recording process indication
In the process of recording, you can see the information about the current recording duration and left free space on the SDcard at the bottom of the screen (figure 110).
Figure 110 – Recording process indication
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50
6.4 Playback of recorded audio files
6.4.1 Playback by device
1. Press the MENU button to go to the main menu of the device.
2. Press to go to the Lines selection menu.
3. According to the p. 5.7, in the Lines selection menu select the required monitor and a variant of stereo signal output for
its playback through the built-in dynamic.
4. To go back to main menu use the MENU button.
5. In main menu, press the button to go to the Browse SD-card menu. All files are stored in folders and are sorted
according to the date, file names contain date and time of the recording start.
6. In the Browse SD-card menu use and buttons to select the required folder and press .
7. In the menu of the selected folder use and buttons to select the required folder and press .
8. In the menu of the selected file use and buttons to select Play and press .
9. To turn on noise cancelling during the playback, use the required filters on the front panel of the device. To adjust the
filters, use the settings in the Filters menu. You can also manage the filters through web-interface.
10. To save a record with the results of the noise reduction turn on the required filters and in the menu of the selected file
choose Clean and save.
To stop the playback, press this button again.
The example of file selection you can see in the figure 111.
Figure 111 – Selecting file to playback
6.4.2 Playback by PC
Audio information is saved as WAV files, which can be played by the device or by standard Microsoft Windows and Linux
software.
6.5 Deleting audio records
To delete audio records select Delete to recycle bin in the Browse SD-card menu (p. 5.3) or Empty recycle bin in the
Utilities menu (p. 5.5).
6.6 Shutting down the device
To shut down the device use the ON/OFF switch (figure 3, position 22).
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7 DEVICE CONTROLLING VIA PC
7.1 Software requirements
Device software is compatible with Microsoft® Windows® XP, Windows® Vista®, Windows® 7, Windows® 8 or Linux.
To use device software you need:
• PC with the USB-port
• Standard software for wav files playback
• Mozilla Firefox® or Windows® Internet Explorer browser
• Enough free space on hard disk to save files.
We do not recommend simultaneous multi-user operation with a Web-interface device.
7.2 Connecting device to PC
7.2.1 Connection via USB
1. Turn on the device, go to Settings Other settings USB mode and select Web-interface (p. 5.4.8). If the Card-
reader mode is active, the device will be recognized only as a memory card by the PC.
To operate with Web-interface of the device, install drivers (linux.inf and linux.cat) from the removable disk “drivers”
by switching to a Card-reader mode.
2. Connect the device using standard cable and the USB–port of the device (figure 3, 29) to a USB-port of the PC (p. 3.9). The
PC will automatically define it as a USB-device.
3. Go to the main menu of the device and select Utilities . Then, select Information. In the Information window,
check the IP-address of the USB connection (figure 112).
Figure 112 – Checking the IP-address of the USB connection
7.2.2 Connection through local network
Connect the device using the standard cable and the ETHERNET connector (figure 3, position 24) to the local network, to
which the PC is connected (p. 3.8).
Turn on the device and check its IP-address, which is used to organize the connection through the local network. To perform
this operation, go to device main menu and select Utilities . Then, select Information. In the Information window,
check the IP-address of the Ethernet connection (figure 113).
Figure 113 – Checking the IP-address of the Ethernet connection
7.3 Launching the application
To launch device control application open a browser (Mozilla Firefox® or Windows® Internet Explorer) and enter device
IP-address in browser address bar (figure 114). You can find the IP-address in the Information menu (Ethernet IP-address if
the device is connected via local network or USB IP-address if it is connected via USB).
Figure 114 – Launch the application in the Mozilla Firefox browser
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To launch the device executive program, please enter the PIN-code (Fig. 115). It is necessary to enter a PIN-code every time
you launch the device executive program.
The default value of the PIN-code is 0000.
Select the Use SSL check box when working with a web interface through a secure protocol https.
Figure 115 – PIN-code input window
To perform the quick launch of the application in Mozilla Firefox, use the recommendations from the Appendix A.
For correct operation of the interface in Internet Explorer 8 and 9, you should install the SSL certificate according to the
recommendations in Appendix B.
7.4 Application main window tabs
If the connection between the device and the PC is established, you will see the window of the ANF II, which contains seven
tabs: SD-card, Monitor, Filters, Information, Settings, Journals and Firmware.
The interface is intuitive and user-oriented.
7.5 SD-card tab
The SD-card tab (figure 116) is a file manager, purposed for SD-card browsing, files playback and removing, and card
memory formatting.
The SD-card tab consists of two sections, which display folders and information about files. In the files information section
you can see the list of files, which are contained in the selected folder.
File name is automatically created by the device according to the date and time of recording start (year-month-day_hour-
minute-second). A file will be saved in a folder, which name consists of the recording date (year-month-day).
Figure 116 – SD-card tab. Content of the selected folder
Click the button to refresh the list of files and
folders. You can see the indication of refresh process in the
figure 117.
Figure 117 – SD-card tab. Process of data refreshing
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If there is no SD-card installed, you will see the message that there is no SD-card detected and the audio records folders are
not found.
To play phonograms directly on the page, use a player in the Play field. For this purpose, Adobe Flash-player should be
installed on a PC.
To download files through a Web-interface, please use the Upload files field. Downloaded file size should not exceed
500 MB.
Figure 118 – Dialog box of opening or saving a file
If there is an SD-card with records installed, you will see its content in the SD-card tab (see figure 116). The button opens
the dialog box for the selected file, which offers to save or to open a file (figure 118). If the browser automatically opens a file
using some media player, right-click the button and select Save as command.
Open with and Save file options allow to perform the required operation with a file.
Select the application in the Open with list and click OK to start file playback by the selected program (figure 119).
Figure 119 – Browser window for selection
Select the Save file option and click OK to open the dialog box, which allows saving a file in required folder and entering its
name (figure 120).
Select the checkbox (see figure 118) to apply current settings for all files of
that type.
Figure 120 – Save file window
The button in the SD-card tab opens the window (figure 121) with the detailed information about the selected file.
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Figure 121 – Information about the selected file
You can move selected folders and its content to the recycle bin (figure 122).
To perform this, select checkboxes with names of required files or select the checkbox in the head of file list and click Move
to recycle bin (see figure 116).
Select checkboxes with the names of the required files or select the checkbox in the header of the file list (to select them all)
and click , to restore files.
Figure 122 – SD-card tab. Recycle bin
Use the button to send files in the queue for the package filtering. You can see the list of the
selected files in the Package processing section. To remove a file from the queue, click Delete. Every file is processed
according to the filters settings, which were set when a file was sent to the processing.
7.5.1 Cleaning recycle bin
Click the button to permanently remove files from the recycle bin. This operation requires user
confirmation in dialog box (figure 123). To delete all files completely, click Ok. To cancel the deletion, click Cancel.
Figure 123 – Empty recycle bin dialog box
7.5.2 Formatting SD-card
If the SD-card is installed but not formatted, you will see warning message.
To format the SD-card, click the button and confirm this operation in the dialog box (figure 124). In the
process of the SD-card, formatting you will see the Formatting caption, and the button will change its
name to and become unavailable to the very end of the formatting.
Figure 124 – Window of SD-card formatting confirmation
When the SD-card formatting finishes, you will see the message that the SD-card is successfully formatted.
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7.6 Information tab
In the Information (figure 125) tab, you can check the current device settings.
Figure 125 – Information tab
7.7 Monitor tab
Use the Monitor tab (figure 126) to check and control the condition of monitor.
Figure 126 – Monitor tab
The State options in the Monitor section allow turning the monitor on or off.
The Bypass options in the Monitor section allow turning bypass on or off. Use the bypass to listen to the input signal
without any filters. After you turn off the bypass, filters settings will be restored.
The State options in the Record section allow enabling or disabling recording. You can see the recording length below State
options.
7.8 Filters tab
Use the Filters tab to adjust filters. The Filters tab contains the following sections:
1. Broadband noise filter (figure 127);
2. Harmonic reject filter (figure 128);
4. Equalizer (figure 129);
5. De-clicker (figure 130);
6. Speech level enhancer (figure 131);
7. Reference noise filter (figure 132).
8. V-changer (figure 133 )
9. Presets (figure 134).
Detailed description of filters you can find in the p. 5.6.
Every selected section has the button to open help.
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To control and adjust settings use the following elements of the graphic interface:
Drop-down list (list). Allows to select the parameter value from the beforehand created list.
Slider. Allows to set the parameter value in the beforehand specified range.
Option. Allows to select one value for some parameter.
When you change some of parameters, using elements of graphic interface, you will see information message -
at the top of the screen.
7.8.1 Broadband noise filter
In the Broadband noise filter (figure 127) section you can control and change current settings of the broadband filter.
Figure 127 – Filters tab. Broadband filter
The State options allow selecting one of broadband noise filter states: enabled or disabled.
The Suppression slider allows setting the level of noise suppression.
The Rumble filter options allow turning on or off low-band noise suppression mode.
The Reverberation options allow turning on or off reverberation suppression mode.
The Subtracted signal options allow turning on or off subtracted signal suppression mode.
7.8.2 Tone interference filter
In the Harmonic reject filter section (figure 128) you can control and change current harmonic reject filter settings.
The State options allow selecting one of the filter states: enabled or disabled.
Figure 128 – Filters tab. Tone interference filter
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7.8.3 Equalizer
In the Equalizer section (figure 129), you can control and change current Equalizer settings.
Figure 129 – Filters tab. Equalizer
The State options allow selecting one of equalizer states: enabled or disabled.
The Type options allow selecting one of equalizer types: parametric or adaptive.
The Low frequency
(Hz) slider allows setting threshold frequency of the signal increase/decrease in low frequencies range.
The High frequency (kHz) list allows setting threshold frequency of the signal increase/decrease in high frequencies range.
The Low gain and High gain (dB) sliders allows to set the ratio of signal increase/decrease (dB an octave) in a range of low
and high frequencies.
7.8.4 De-clicker
In the De-clicker section (figure 130), you can control, and change current settings of de-clicker.
Figure 130 – Filters tab. De-clicker
The State options allow selecting one of filter states: enabled or disabled.
The Threshold slider allows adjusting sensitivity of impulses detection (from weak to strong).
7.8.5 Speech level enhancer
In the Speech level enhancer section (figure 131) you can control and change current settings of speech level enhancer.
Figure 131 – Filters tab. Speech level enhancer
The State options allow selecting one of speech level enhancer states: enabled or disabled.
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7.8.6 Stereo filter
In the Reference noise filter section (figure 132) you can control and change current settings of stereo filter.
Figure 132 – Filters tab. Stereo filter
The State options allow selecting one of reference noise filter states: enabled or disabled.
The Reference channel options allow selecting left or right reference channel.
The Delay slider allows compensating the delay of the noise acoustic way (33 cm/ms or 13 inches/ms) from the noise source
to the microphone of the primary channel.
The Suppression slider allows setting the required depth of the interference suppression in the primary channel.
7.8.7 V-changer
In the V-changer section (figure 133) you can adjust the parameters of voice changer.
Figure 133 – Filters tab. V-changer
The State options allow selecting one of v-changer states: enabled or disabled.
The Voice-pitch slider allows adjusting the rate of the pitch length.
The Transformation slider allows adjusting the changing rate of the speakers’ speech transformation.
7.8.8 Presets
In the Presets section (figure 134) you can control and change current settings of the preset.
Figure 134 – Filters tab. Presets
The Select preset list (figure 135) allows selecting one of the defaults or created by user presets. Default presets has the “!”
mark in the beginning of their name (for example, “!Street noise”) and such presets cannot be deleted or edited.
Figure 135 – Presets. List of presets
The button refreshes the list of presets. You can use proper buttons to rename, apply, or delete a user-created preset.
Your own filter settings can also be saved as a new preset.
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7.9 Settings tab
Use the Settings tab to adjust all required for playback and recording parameters. It contains the following sections:
1. Audio settings (figure 136)
2. Lines selection (figure 138)
4. Voice activation (figure 139)
5. Recorder timer (figure 141, 142)
6. Overflow protection (figure 143)
7. Security (figure 144)
8. Date and time (figure 146)
9. Network settings (figure 148)
10. Other settings (figure 150)
11. Default settings (figure 151)
Every selected section has the button to open the help.
To control and adjust the parameters, use same elements of graphic interface as in the Filters tab.
When you change some of parameters, using elements of graphic interface, you will see information message –
.
7.9.1 Audio settings
In the Audio settings section (figure 136) you can control and change current settings of recording parameters.
Figure 136 – Settings tab. Audio settings
Sample rate. The frequency of the signal sampling during its digitization.
Bit depth. The number of encoding bits.
Compression. Compression method, which is used to save recorded audio file.
Channel mode. Defines the way of saving two-channel signal in audio file: stereo means channels are saved separately,
mono means that they are mixed in one monophonic channel.
Split files. Maximum length of audio record.
Save files. Audio records saving mode.
Restore recording. Enables or disables recording resume after device switching off and then switching on.
The Sample rate list allows selecting sample rate: 8, 16 or 44.1 kHz.
The Bit depth list allows selecting the bit depth: 16 or 24 bit.
The Compression list allows selecting compression method: PCM or µ-law. Not all values of sample rate and bit depth are
valid for all methods of compression. If inappropriate method is selected, you will see a warning message (figure 137).
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Figure 137 – Warning message about inappropriate compression method
The Channel mode options allow selecting stereo or mono mode.
The Split files list allows selecting the limits on the continuous recording duration: 30 min.; 1 hour; hours; 5 hours.
The Save files list allows to select, which files must be saved: original, cleaned or both.
The Restore recording options enable to select on/off alternative for recording resume after device switching off and then
switching on.
7.9.2 Lines selection
In the Lines selection section (figure 138) you can control and change current settings of playback and recording lines.
Figure 138 – Settings tab. Lines selection
Audio input. Selection of signal source for recording.
Monitor. Selection of the playback device.
Loudspeaker/headphones channels. Defines which one of stereo channels must be played through the built-in
monophonic device. The mix/stereo value means that stereophonic channel will be mixed into one channel for built-in
speaker and stereo for headphones.
Analog input mode. The type of the signal source, which is connected to the analog input.
Analog input signal. The way of signal to source transfer (asymmetrical value means by two lines, differential means by
three lines).
The Audio input list allows selecting one of the following options:
– Internal microphones
– Analog input (corresponds to sockets in the figure 3, position 27 and 28)
– Telephone line (corresponds to sockets in the figure 3, position 17 and 18)
The Monitor list allows selecting the following ways of the sound output:
– Analog output (corresponds to sockets in the figure 3, position 25 and 26)
– Loudspeaker/headphones
The Loudspeaker/headphones channel list allows selecting the channel for playback: left, right or mix/stereo.
The Analog input mode options allow selecting the line input mode: linear or microphone.
The Analog input signal options allow selecting the way of the signal transfer: asymmetrical or differential.
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7.9.3 Voice activation
In the Voice activation section (figure 139) you can control and change current settings of voice activation.
Figure 139 – Settings tab. Voice activation
The State options allow selecting the state of voice activation: on or off.
The Start threshold slider allows to adjust the level of the input signal (in dB), the exceeding of which, starts the recording.
Start threshold can be set in a range from 0 to 72 dB with 1 dB pitch.
The Start delay slider allows setting the time of recording delay when the voice activation starts. Start delay can be set in a
range from 30 to 200 ms with 10 ms pitch.
The Stop threshold slider allows setting minimum level of input signal (in dB). If signal level becomes lower than that value,
the recording will stop. The stop threshold can be set in a range from 0 to 72 dB with 1 dB pitch.
The Stop delay slider allows setting the time slot (in ms) from the moment when voice activation stops the recording, until
the end of it. Stop delay can be set in a range from 500 to 10000 ms with 500 ms pitch.
Start threshold value always must be higher than stop threshold; otherwise, you will see a warning message (figure 140).
Figure 140 – Warning message about inappropriate parameters
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7.9.4 Recorder timer
In the Recorder timer section (figure 141 and 142) you can control and change current settings of the recording timer.
Figure 141 – Settings tab. Recorder timer
Figure 142 – Settings tab. Recorder timer with opened calendar
Start time. Date and time of the recording start.
Record duration. Required duration of the record.
Schedule. Defines if the recording should be repeated in the next days at the same time.
State options allow selecting one of timer states: enabled or disabled.
If the timer is on, you will see the following icon: .
You can set such parameters as Start time, Record duration, and Schedule if the timer is off.
Start time consists of date selection box - , and time selection box - .
To set the date, use the calendar (see figure 142), to open it click the date selection box .
To set the values of hours, minutes and seconds in the time field, use a keyboard by clicking the left mouse button on them.
The Record duration slider allows setting the duration of the record (in hours and minutes).
The Schedule options allow selecting the mode of Recorder timer activation: every day or once.
Select the every day mode to repeat the recording next days at the same time.
Select the once mode to start the recording only at the set date.
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7.9.5 Overflow protection
In the Overflow protection section (figure 143) you can control and change current settings of the SD-card memory
overflow protection.
Figure 143 – Settings tab. Overflow protection
There are two variants of protection:
Auto empty recycle bin. Automatic cleaning of the recycle bin when the memory card is full.
Auto delete old files. Automatic deletion of the oldest records when the memory card is almost full (less than 80 MB) until
there will be enough space for new records. If that parameter is off and there is no enough free space on the memory card,
the recording will be stopped.
Options Auto empty recycle bin and Auto delete old files allow to enable or disable these functions.
7.9.6 Security
In the Security section (figure 144) you can control and change the current settings of the button lock.
The Button lock is used to prevent buttons of the device from accidental press.
When the button lock is active, the device ignores buttons press.
You can activate buttons lock manually, using the screen menu of the device: Utilities Button lock. To adjust automatic
lock, use the Button autolock list. To unlock the buttons, press and one after another. The RECORD button never
locks.
Figure 144 – Settings tab. Security
The Button autolock list allows setting the period of time without any user activity after which buttons and controls
automatically will be locked.
The countdown begins from the last press of any button or using any control handles. Possible values are the following: no,
30 sec, 1 min, 2 min.
If you want the device to request the PIN, by every attempt to unlock the buttons, select the PIN-code protection option.
The Change PIN-code button in the Security section opens dialog box where you can change the PIN (figure 145). The PIN
consists of four randomly selected digits. To change the PIN you must enter the old PIN two times, enter the new one, and
click Change PIN-code. To return to the Settings tab without changing the PIN, click Cancel or the Close button .
Figure 145 – Window of PIN-code changing
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7.9.7 Date and time
In the Date and time section (figure 146) you can control
and change the clock of the device.
Figure 146 – Settings tab. Date and time
The button opens dialog box where you can set the date and time (figure 147).
Figure 147 – Setting date and time
To set the date and time quickly, use the Synchronize button that simultaneously synchronizes the date and time of the
device with the system time of your computer.
To set the date use the calendar, which appears by double-click in date setting box. To select the month use and
buttons, to select the day click the required date.
You can also enter the hours, minutes and seconds in the Time field from the keyboard by clicking the left mouse button on
them.
The Save button allows you to save device date and time changes.
The Cancel button closes the dialog box without saving the date and time changes.
7.9.8 Network settings
In the Network settings section (figure 148) you can check and change network settings of the device.
Figure 148 – Settings tab. Network settings
The button opens the dialog box where you can change network settings (figure 149).
Figure 149 – Settings tab. Change network settings
The Obtaining IP-address option allows selecting automatic or static IP-address.
In the IP-address (Ethernet) box you can enter the IP-address of the device when it is connected through the Ethernet (if the
static IP-address is selected).
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In the Mask (Ethernet) box you can enter the subnet mask (if the static IP-address is selected).
In the Gateway
box you can enter the address of the default gateway (if the static IP-address is selected).
In the DNS-server
box you can enter the address of the DNS-server (if the static IP-address is selected).
In the IP-address (USB)
you can enter the IP-address of the device when it is connected through the USB.
In the Monitoring
port you can set the port of monitoring.
To save changes click Save, to cancel changes click Cancel.
7.9.9 Other settings
In the Other settings section (figure 150) you can control and change the indication and the USB-interface mode.
Figure 150 – Settings tab. Other settings
Use the Display backlights list to adjust the time of backlit deactivation from the moment of the last button press. It can
have the following values:
– no – device backlit is permanently on
– 15 or 30 seconds
– 1 minute.
You can turn on or off recording level indicators and buttons LEDs using Signal and buttons LEDs options (figure 2, position
10).
The USB mode options allow selecting one of the USB-connection modes: Web-interface or Card-reader.
7.9.10 Default settings
In the Default settings section (figure 151) you can restore default settings of the device. To restore default settings, click the
Apply default settings button.
Figure 151 – Settings tab. Default settings
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7.10 Journals tab
In the Journals tab (figure 152) you can see the content of the device inner log.
Figure 152 – Application main window. Journals tab
To clean the journal, click the button.
To save the content of the journal into a file, which you can send to technical support, click the
button.
7.11 Firmware tab
Use the Firmware tab (figure 153) to upload a new version of device software.
Figure 153 – Application main window. Firmware tab
The device is controlled by its firmware, which defines its functions and abilities.
Firmware update adds new functions and correct found errors.
New versions of firmware are available on http://www.speechpro.com/eng/.
To update the firmware, perform the following operations:
1. Download a new version of firmware from the manufacturer’s site.
2. Connect the device to the PC (p. 7.2 and 7.3).
3. Select the Firmware tab and click Browse (see figure 153).
4. Select the new firmware file.
5. Click Upload in the Firmware tab to start the update.
6. Wait until the end of the firmware update and check its working capacity.
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7.12 Disconnecting device from PC
To disconnect the device, perform the same operations as for any other USB-device:
1. Click the icon in the taskbar, and then click Safely remove USB de
vice (figure 154).
Figure 154 – Taskbar. Safely remove USB device
2. Wait, until the message that the device can be removed appears (figure 155) and disconnect the USB-device from the
USB-port.
Figure 155 – Taskbar. Safely remove USB device
If the device is connected to the PC through the local network, close the browser, turn off the device, and disconnect it from
the local network.
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APPENDIX A
BROWSER SETTINGS FOR PROGRAM QUICK LAUNCH
To launch the device executive program, follow the instructions listed below. Examples are given with respect to the browser
Mozilla Firefox 11.0.
A.1 Home page using
In the main browser menu, select the Tools tab (see Figure A.1), click Options, and in the Options window (Figure A.2) select
the General tab.
Figure A.1 – Choice of browser window
Figure A.2 – Browser home page setting
When Firefox starts, it opens the home page by default. You can specify the Show my home page option in the Startup
field.
Enter in the Home Page field IP-address of the device, specified in the Information device tab (see Fig. 125).
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A.2 Bookmarks usage
To launch the program quickly, select the Bookmark This Page item form the contextual menu of browser tab (see Figure
A.3).
Figure A.3 – Contextual menu of the tab
In the dialog box (see Figure A.4), click Done.
Figure A.4 – Name and folder choice of the bookmark
Use the Bookmarks tab of browser main menu, to allow easier access to the program in the future.
A.3 Usage of the shortcut on the desktop
Move your mouse over the title of browser tab , press the left mouse button and then drag and drop it with the
appeared image in the area of the OS desktop (see Figure A.5).
Figure A.5 – Name and folder choice of the bookmark
As a result, you will see a shortcut on the desktop to launch the program of the device. You can change the view and the
name of the shortcut by OS standard means. To allow easier access to the program in the future, use the shortcut on the
desktop.
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APPENDIX B
CERTIFICATE ADJUSTMENT IN INTERNET EXPLORER
To operate with the device in Internet Explorer 8 and Internet Explorer 9, it is necessary to install the certificate. Certificate
installation procedure is described below.
Start working with the device, as described in Section 7.3. After entering the PIN-code, and clicking Enter, an error message
will appear. In the window with an error message (Figure B.1), click Continue to this website.
Figure B.1. Opening of site
Open Internet Options and click the Security tab. On the tab, click Trusted sites, click Sites and add the current address of
the device as a trusted site. The address should begin with https (Fig. B.2).
Figure B.2. Adding the current address of the device as a trusted site
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Please return to the PIN-code input page, and re-run the operation program of the device. Select Certificate Error in the
browser address bar, and then click View Certificates (Fig. B.3).
Figure B.3. Choice of “View certificates”
In the Certificate window, click Install Certificate… (see Figure B.4).
Figure B.4. Choice of certificate installation
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In the Certificate Import Wizard, click Place all certificates in the following store, and select Trusted Root Certification
Authorities as a repository (Fig. B5).
Figure B.5. Choice of certificate store
In the Security Warning window, confirm the certificate installation, and in the Internet Options dialog window on the
Advanced tab, click to clear the Warn about certificate address mismatch check box (Figure B.6)
Figure B.6. Certificate installation confirmation
On the Security tab of the Internet Options window, from the browser's list of trusted sites (see Fig. B5) delete the
previously added device address. Restart the browser.
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APPENDIX C
LIST OF COMPATIBLE MEMORY CARDS
The device supports Secure Digital (SD) cards and Secure Digital High-Capacity (SDHC) memory cards. There are following SD
and SDHC cards with up to 32 GB capacity, which compatible with the device:
– Kingston® Technology;
– Silicon Power® Silicon-Power Computer & Communications Inc.;
– Transcend® Transcend Information, Inc.
Examples of compatible cards you can see in the figure C.1.
Figure C.1. Examples of compatible memory cards
It is possible to use cards of different types, but the manufacturer cannot guarantee reliable device performance.
To check the compatibility of a card, which is not mentioned in the list above, insert a card into the device, wait until the
information about card capacity appears, and then, perform test recording.
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APPENDIX D
RECORDING RECOMMENDATIONS
To receive high-quality audio records, we recommend following these rules:
1. Use the stereophonic recording mode without the compression with the 44,1kHz sample rate.
2. Usage of monophonic recording mode allows to record longer files on the same hard disk space.
3. Use manual adjustment of the input signal level.
4. To avoid the loss of useful information, we recommend using voice activation only if the level of a signal is stable and
predictable enough. It is hard to use audio files recorded in voice activation mode as an exhibit because it is hard to prove
their authenticity.
5. During the recording, place microphones as close as it possible to the speech signal source, and as far as it possible from
sources of acoustic and electromagnetic interferences. The closer microphones to the speech signal source, the higher SNR
ratio, the lesser negative influence of the reverberation and the higher speech intelligibility.
6. External microphones are more sensitive and it is easy to fix them on clothes (on the jacket’s lapel or shirt’s collar). They are
more vulnerable to electromagnetic interferences. We recommend placing external microphones at the 15 cm (5, 91 inches)
distance minimum from each other.
7. Place external microphones in a way to avoid the influence of vibration, shock loads, and friction between the device and
other objects (for example, clothes) especially during the movement.
8. Avoid direct contact of the device or external microphones with rigid or metal surfaces (for example, table tops, car bodies,
concrete walls).
9. If you perform the monophonic recording, only the signal, which is coming through the input of one microphone (left one)
will be recorded.
006-010713
Documentation version
06-01 07 2013
Software version
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