Biamp VOICECRAFTER User Manual

ADVANTAGE® VOICECRAFTER

and VOICECRAFTER Plus

Acoustic Echo Cancellers

Operation Manual

®

Feb 1/00

Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. [phone] http://www.biamp.com

an affiliate of Rauland Borg Corp.

TABLE OF CONTENTS

Front & Rear Panel Features

Software Control

TTC Control

Configuration

Calibration

Option

Connecting External Equipment

RS232

Applications

Troubleshooting

Third-party Control

Specifications & Block Diagram

Warranty

blankVOICECRAFTER

INTRODUCTION

ADVANTAGE
Acoustic Echo Cancellers, which provide full-duplex speech between 2 or more
locations in video or teleconferencing applications. VOICECRAFTER is a DSP
based device and is easily programmed via Windows
VOICECRAFTERS’ long tail length and fast convergence time allow flawless
adaptation to acoustic changes in a room, without the necessity of continual
training. A second model, VOICECRAFTER Plus, includes a 2-wire (POTS)
card for teleconferencing applications. The VOICECRAFTER and the
VOICECRAFTER Plus are both covered by a 5-year warranty.

VOICECRAFTER features include:

pgs. 2 & 3

pg. 4 & 5

pg. 6

pgs. 7 & 8

pgs. 9 ~ 11

pg. 12

pgs 13 & 14

Pg. 15

pgs. 16 ~ 18

pg. 19

Pg. 20

pg. 21

and

VOICECRAFTER Plus

®

VOICECRAFTER and VOICECRAFTER Plus are tamper proof

®

95/98/NT software.

♦ 2 balanced channel inputs on plug-in barrier connectors

♦ channel input 2 can be configured to accept line level inputs

♦ balanced codec input and output on plug-in barrier connectors

♦ phantom power and trim control on channels 1 & 2 (rear panel)

♦ optional input/output transformers on codec inputs/outputs

♦ model VOICECRAFTER Plus includes 2-wire interface

♦ mono-summing aux interface provided on RCA connectors

♦ 0dB and –20dB nominal codec levels switch selectable

♦ 5 ASIC chips provide long tail length and

fast convergence time

♦ 270 mSec tail length and 250 mSec convergence time

♦ five non-volatile memory presets store all settings

♦ information stored in preset 1 is automatically recalled on power-up

♦ RS-232 serial port & Windows

®

95/98/NT programming software

♦ bi-colored LED’s provide level and peak indication

♦ incorporates AES recommended grounding practices

♦ CE marked and UL / C-UL listed power source

♦ covered by Biamp Systems’ five-year warranty

1

FRONT & REAR PANEL FEATURES

volume mute

FRONT PANEL FEATURES

Volume Control: Volume up and volume down controls adjust the

‘User Volume’ inside the VOICECRAFTER. ‘User Volume’ adjusts
the Main Output level, and the range of ‘User Volume’ is
established by the VOICECRAFTER during a Configuration Train
Cycle.

Mute Switch: This momentary switch toggles the System Mute
mode. When the mute switch is pressed a first time, system mute
is engaged (Send and Receive LED both Blink amber), when the
mute switch is depressed again, the system mute is turned off
(Send and Receive LED’s stop blinking). NOTE: System mute
mutes the channel inputs and the main output, system mute also
disables adaptation of the echo canceller until the system mute is
turned off.

Send & Receive LED’s: These bi-colored LED’s indicate signal
levels inside the VOICECRAFTER. When the LED is green;
indicates that there are normal levels inside the unit. When the
LED is red; indicates a clipping or peak condition in the unit. Send
LED indicates levels being transmitted out of the VOICECRAFTER
(2-wire interface, Codec Output, Aux output). Receive LED
indicates levels being received by the VOICECRAFTER (2-wire
interface, Codec Input, Aux Input). NOTE: The send and receive
LED will both blink amber when the VOICECRAFTER is in a
System Mute Mode. The send and receive LED will both blink
green during a Configuration Train Cycle.

Power Switch & On Indicator: When the Power Switch is
depressed, the adjacent red LED will light indicating power to the
unit is On. Release the Power Switch to turn power off. NOTE:
information is stored into preset 1, upon power-up, the
VOICECRAFTER will recall preset 1. If information is not stored in
preset 1, then the VOICECRAFTER will initiate a Configuration
Train Cycle upon power up.

If

ADVANTAGE VOICECRAFTER

Acoustic Echo Canceller

receivesendupdown

REAR PANEL FEATURES

on

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AC Power Cord: The power transformer provides 27 Volts AC to
the VOICECRAFTER, and is detachable via a 5-pin DIN
connector. The VOICECRAFTER has two internal ‘self-resetting’
fuses (there are no user serviceable parts inside the unit). If the
internal fuses blow, they will attempt to re-set after a short period.
However, this may be an indication that the VOICECRAFTER
requires service.

Setup Port: This 9-pin Sub-D (male) connector provides an RS­232 Serial Port for control via computer (default of 9600 baud).
The Setup Port has the following pin assignments

(left-to-right &
top-to-bottom): Pin 1) not used; Pin 2) Receive Data (RxD) input;
Pin 3) Transmit Data (TxD) output; Pin 4) Data Terminal Ready
(DTR) output; Pin 5) Ground; Pin 6) not used; Pin 7) Request To
Send (RTS) output; Pin 8) Communication to Send (CTS); Pin 9)
not used. PC Control Software and a serial cable are provided for
programming via Windows

®

95 (see Setup on pg. 4). NOTE: The
CTS and RTS lines are internally shorted inside the
VOICECRAFTER (these pins do not need to be controlled by the
PC).

Control Port: This 9-pin Sub-D (female) connector provides a
Control Port for RS-232 control (default of 9600 baud) of the
VOICECRAFTER via the VOICECRAFTER TTC or third-party
controllers. The Control Port has the following pin assignments
(right-to-left & top-to-bottom): Pin 1) +5 Volts; Pin 2) Transmit
Data (TxD) output; Pin 3) Receive Data (RxD) input; Pin 4) not
used; Pin 5) Ground; Pin 6) not used; Pin 7) not used; Pin 8) not
used; Pin 9) not used.

2

FRONT & REAR PANEL FEATURES

27V

50/60 Hz

27 watts

class 2 wiring

2-wire Interface: (VOICECRAFTER Plus only.) Connect the
telephone wall outlet to the RJ11 port labeled ‘line’, and connect
an analog telephone to the RJ11 port labeled ‘phone’. The 2-wire
interface can be used at the same time as the codec ports for
adding a telephone call to a videoconference, or it can be used
alone for teleconferencing applications.

Main Out: This plug-in barrier strip provides the balanced Main
Out from the VOICECRAFTER. For balanced output, wire high to
(+), low to (-), and ground to (∇). For unbalanced output, wire
high to (+) and ground to (∇), leaving (-) unconnected. Signal
level will be reduced by 6dB when outputs are unbalanced.

Main Level: This screwdriver adjustable control allows the main
output of the VOICECRAFTER to be adjusted during calibration.
Once the main level is set and the VOICECRAFTER is trained, the
main level control should be left alone.

Aux In & Aux Out: These RCA connectors provide a mono­summing Auxiliary interface for connection to a recording device,
VCR, or a second codec (See page 7 for instructions). The Aux
out connectors are wired so that a stereo signal is split and the
same signal will appear on each RCA connector. The Aux In
connectors are wired so that stereo signals are summed together
into a mono signal at this input .

BIAMP SYSTEMS

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

setup

control

phone line

2-wire interface

main out

aux inaux out

codec out

-20dB
0dB

codec

level

codec in channel 2 channel 1

inputs

trimlevel

+10

trim

VOICECRAFTER

+10

Codec Out: This plug-in barrier strip provides the balanced Codec
Out from the VOICECRAFTER. For balanced output, wire high to
(+), low to (-), and ground to (∇). For unbalanced output, wire
high to (+) and ground to (∇), leaving (-) unconnected. Signal
level will be reduced by 6dB when outputs are unbalanced.

Codec In: This plug-in barrier strip provides the balanced Codec
Output from the VOICECRAFTER. For balanced input, wire high
to (+), low to (-), and ground to (∇). For unbalanced input, wire
high to (+) and ground to both (-) & (∇).

0 dB / -20dB: This push button switch changes the nominal level
of the codec input and output to either –20dB or 0dB, (switch out is
–20dB, switch in is 0dB) allowing proper interface with many
different codecs. The VOICECRAFTER has an internal +/-12dB of
adjustment via software (see page 4). NOTE: Check the
documentation of your specific codec before installation.

Channel Inputs 1 & 2: These plug-in barrier strips provide the
balanced mic input to the VOICECRAFTER. Input 2 can be set for
balanced or unbalanced line level signals via software selection
(see Page 4). For balanced input, wire high to (+), low to (-), and
ground to (∇). For unbalanced input, wire high to (+) and ground
to both (-) & (∇). Internally, 12 Volt phantom power is available
and is always on, unless line level input is selected via software
on input 2.

Channel Trim & +10 Indicator: The Trim controls adjust gain at
the respective inputs to compensate for different signal levels. For
best performance, set Trim so only occasional peaks in signal level
activate the +10 Indicator.

3

SOFTWARE CONTROL

VOICECRAFTER and VOICECRAFTER Plus parameters are all adjustable using the BiampWin Windows® 95/98/NT 'PC Control Software'
and serial cable provided with the unit. The PC Control Software provides programs for various ADVANTAGE
VOICECRAFTER (Plus). Once the software is started (and Comm Port Configuration is set), the control screens are accessed via the
drop-down menus at the top of the opening screen. The File
recalls the Comm Port Configuration screen. The Window
available adjustments. To install PC Control Software

menu provides functions such as open, close, save, etc. The Settings menu

menu arranges the active product screens. The Help menu explains the

: Select ‘Run’ from Windows® 95/98/NT ‘Start’ menu, and enter A:\SETUP. System
Requirements: Windows® 95 with 8M of RAM & 2M of available hard disk space (serial port required for ‘on-line’ operation). The title bar
across the top of the Main screen will indicate model of the VOICECRAFTER being controlled. The PC Control Software can operate ‘off­line’ (with no product connected) by opening a ‘new’ file for the desired product.

®

products, including the

MIX SCREEN

The Mix Screen is used to adjust VOICECRAFTER input/output levels, store/recall of five memory presets (preset 1 being the power-up
preset) and to initiate training. Adjustments are made with the computer mouse (or keyboard). Input & output levels are changed by
selecting the desired level via the pull down menu.
Channel 1 & 2

These sections are for setting up the channel inputs on the VOICECRAFTER. Setting the desired level also changes the
default gain (which is used for a train). NOTE: there is an analog screwdriver trim pot on the rear panel for making input adjustments.
Aux

selects the mode of the Aux port, and sets the desired levels for the Aux port interface. (See page 13)

Preset

buttons recall the corresponding presets from non-volatile memory.

Store

button opens a menu for storing current settings in any of the Presets 1~5, or deleting the preset stored into preset #1. Each preset
saves settings established by a Configuration Train Cycle. If settings are stored into Preset 1, then Preset 1 will be recalled upon power-up.
Averages
AutoAdaptation

displays the DSP averages calculated by the VOICECRAFTER, these values are continually updated every second.

selects the operation of the AutoAdaptation function, Fully Enabled, Gain Disabled, and Fully Disabled. NOTE: Gain
adjustments on Channel 1/ 2 and Main Output cannot be made unless AutoAdaptation is set to Fully Disabled. Gain Disabled: stops the
VOICECRAFTER AGC from making gain changes to the Mic inputs, Codec Input, and Main Output.
Main Output
Codec
Dial Pad
2-Wire

selects the level of the main output, Noise turns on/off the internal white noise generator

adjusts the level of the Codec Input and Codec Output.

is for dialing out of a VOICECRAFTER Plus via the 2-wire port.

turns on and off the 2-wire port, puts a call on hold, or performs the flash function, as well as selecting either pulse or DTMF dialing
modes. Click on DTMF mix to hear DTMF tones through the speakers (checked is enabled). After selecting the 2-wire On/Off button,
either click each desired number to be dialed out, or press the corresponding numbers on the keyboard to dial the number. After the call is
complete, click on the 2-wire On/Off button again.

4

SOFTWARE CONTROL

Train Screen

The train screen is accessed by clicking on the Train button located in the AutoAdaption section of the Mix-screen.

The Train screen is used to set the AERL Target, initiate a Config Train, a Refresh train, or select the Power Up options of a
VOICECRAFTER or VOICECRAFTER Plus.

AERL Target
9~11, for more information)

Refresh
room.

Config
room. A ‘Training Complete’ prompt pops up after a Config train, click ‘OK’ and then the training results are displayed in the Train section
of the Train Screen.

Power Up Options

NOTE: In order for Power Up Options to take effect, settings must be stored into Preset 1.

Select the desired AERL target (0-20dB) via the pull-down menu before initiating a Config train. (See Calibration, pages

begins a refresh train; two quick bursts of white noise are generated for the VOICECRAFTER to build an acoustic model of the

begins a configuration train; white noise is generated and the VOICECRAFTER takes measurements and adjusts levels for the

selects the mode of training performed upon a power-up. Select between a Config Train, Refresh Train, or a Skip Train.

Password Screen

This screen allows a password to be set, preventing un-authorized tampering with the Echo Cancellers settings. Type in the desired
password, then re-type the password to verify. The password can be any combination of alpha or numeric characters up to 32 characters

Advanced Settings

The advanced settings screen is used to diagnose the VOICECRAFTER and VOICECRAFTER Plus units. A qualified technician should
only access the Advanced Settings screen, as parameters changed in this screen can adversely effect the performance of the echo
canceller. Access the Advanced screen by clicking on the VOICECRAFTER pull-down menu (located at the top of BiampWin, then select
the Advanced Setings option.

5

TTC CONTROL

The VOICECRAFTER TTC (Table Top Controller) allows convenient control of the day-to-day operations of the VOICECRAFTER and
VOICECRAFTER Plus. The TTC features a 15’ attached cable for connecting the TTC to the Control Port on the VOICECRAFTER. To

add a longer cable (up to 50’), remove the 4 screws on the bottom of the TTC. Remove the existing cable from the TTC. Feed the ‘pigtail’
end of the connector through the hole; attach the strain relief and the ferrite bead from the old cable to the new cable on the inside of the
TTC. Attach the wire connected to pin 1 (DB9M) to the terminal labeled ‘+V” on the TTC. Attach the wire connected to Pin 3(DB9M) to the
terminal labeled ‘Tx’ on the TTC. Attach the wire connected to pin 5 (DB9M) to the terminal labeled ‘Gnd’ on the TTC. Replace the bottom
cover and the 4 screws. Attach the DB9M to the Control Port of the VOICECRAFTER (Plus).

C

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A

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C

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C

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G

A

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A

V

D

A

12

VOLUME

MUTE

VCR MUTE

VOICECRAFTER TTC

1

1

GHI

4

4

PRS

7

7

34

PRESETS

ABC

2

2

JKL

5

5

TUV

8

8

OPER

0

0

5

DEF

3

3

MNO

6

6

WXY

9

9

#

#

®

PHONE

HOLD / PAUSE

FLASH / STORE

SPEED DIAL

Connect the TTC to the Control Port of the VOICECRAFTER (Plus). The VOICECRAFTER provides the necessary power for the TTC.

Preset Recall

– Recalls up to 5 stored presets (Presets must be stored using PC Control Software, and can NOT be stored via the

VOICECRAFTER TTC).

– Adjusts the user volume up and down. The VOICECRAFTER sets the limits on user volume increase and decrease amounts to

Volume
ensure that the VOICECRAFTER can adapt to changes.

– Engages the System Mute Mode (Channel inputs and Main Output is muted). LED flashes amber when VOICECRAFTER is

Mute
muted, and remains off during normal operation.
VCR Mute

– Mutes and un-mutes the Aux port in VCR mode for switching between Record and playback functions. This button will have
no effect if the VOICECRAFTER is in Bridged Mode.
Dialing Pad

– When the 2-wire interface is connected, these numbers (similar to any telephone) allows dialing directly from the

VOICECRAFTER Plus.

– Connects and dis-connects the 2-wire interface. When the red LED is on, the 2-wire connection is made, when the red LED is off,

Phone
the 2-wire interface is ‘hung-up’.
Hold/Pause

– Puts the 2-wire interface on hold. This button can be used to put a 2-wire conversation on hold, yet still maintains a 4-wire
connection (useful in Video- and Audio-conferencing situations). Pause function is used in speed dialing.
Flash/Store

–

Flash Engages the Flash function (if available –Check with your phone system provider) to answer call waiting or engage 3-way calling.
Store Used for setup of Speed Dial. In a dis-connected state this button is used to store Speed Dial numbers.

Speed Dial

– When pressed, followed buy a 0~9 on the Dialing pad, will connect the 2-wire interface and dial the stored number.

Storing Speed Dial Numbers

1. When a conference call is not connected, hold the Speed Dial button until the Mute and VCR Mute LED begin to blink.

2. Press the memory location desired (0-9), followed by the desired number to be dialed (up to 16 characters), then press Flash/Store

button.

3. The LED above the Phone button will blink signaling that another speed dial number is ready to be stored, repeat step 2, or press

Speed Dial to cancel.
NOTE: The pause button is used to insert a delay between numbers dialed. This is useful when dialing out of a local PBX. Example:
Press and hold Speed Dial button, enter memory location then 9 to get an outside line, then the Hold/Pause button, followed by the number
to be dialed. This inserts the necessary delay for the PBX to obtain an outside line.

6

CONFIGURATION

After all the microphones and speakers are connected to the VOICECRAFTER, the unit needs to be calibrated and trained before a
videoconference or teleconference can be held. Training is how the VOICECRAFTER is configured for proper operation, setting
microphone and speaker gains for optimum performance, by means of the Control Software. The VOICECRAFTER uses white noise to
establish gain settings as well as to make an acoustic model of the room for echo cancelling purposes. There are 2 modes of training for
the VOICECRAFTER.
Configuration Train
updates the H-register* in this training mode.
Refresh Train
Train cycle.
(* H-register: A memory location where an acoustic model of the room is created and stored for use in the echo canceling process.)

After a Configuration Train cycle is initiated by means of the BiampWin software, the VOICECRAFTER will provide resulting information
from the Train cycle. The VOICECRAFTER will send out an AERL* value and an ERLE* value.

*AERL (Acoustic Echo Return Loss) is the difference in level between signal coming out of the speakers and signal which is picked up by
the microphones. VOICECRAFTER calculates an AERL by subtracting what is received by the echo canceller (EC_Si*) from what is sent
out to the speakers (EC_Ri*). The formula is (EC_Ri - EC_Si = AERL). An AERL target is factory set for +10dB, with a range of 0dB ~
+20dB, which is adjustable via software. This number is used as the basis for a Configuration Train cycle. This number represents the
amount of attenuation that the VOICECRAFTER expects to see due to the normal room acoustics. AERL should be within +/-2dB of set
target. If the VOICECRAFTER fails to achieve an AERL greater than 0dB, the VOICECRAFTER will display a train alarm.
(*EC_Si - the amount of signal fed to the echo canceller from Channel 1 and Channel 2.)
(*EC_Ri - the amount of signal fed to the echo canceller from Codec In, 2-wire in, and Aux In.)

: Training mode where VOICECRAFTER sets microphone gain and speaker gain settings. The VOICECRAFTER also

: Training mode where the H-register* is updated. VOICECRAFTER reverts to settings from the most recent Configuration

*ERLE (Echo Return Loss Enhancement) is an indication of the amount of VOICECRAFTER processing required for the room. The ERLE
is a snapshot measurement taken at the end of a Configuration Train cycle. The VOICECRAFTER calculates ERLE by taking what is
received by the echo canceller (EC_Si) and subtracting what is sent out of the echo canceller (EC_So)*. The formula is (EC_Si - EC_So =
ERLE). For most rooms the ERLE should be 8dB or greater. In some less reverberant rooms a lower ERLE may be acceptable. A low
ERLE in a highly reflective room means that the echo canceller may not be able to adapt quickly to changes in the conference
environment. In a more absorptive room the echo canceller may not need to work as hard and therefore the ERLE can be a lower value
without any effect on the echo cancellers performance.
(*EC_So - the amount of signal fed out of the echo canceller to Codec Out, 2-wire out, and Aux Out.)

ERLE

AERL

Channel Inputs

Ec_Si

To Main output

7

AEC

EC_So

EC_Ri

CONFIGURATION

If the VOICECRAFTER can’t achieve an AERL within +/-2dB of target, the target may need to be raised or lowered depending on the
room. Example: A large room, which produces excessive loudspeaker gain and echo after training, may require the AERL target be
increased. However, a small room, which produces insufficient loudspeaker gain, may require the AERL target to be decreased. After
adjusting the AERL target, the VOICECRAFTER must again be put through a Configuration Train cycle. The room should be quiet during
any training cycle. An EC_Si of less than -35dB is desired for an accurate training cycle, otherwise there is too much ambient noise in
the room due to air handling, ect. Placement of microphones in relation to speakers is essential for proper training values. If a
microphone is too close to a speaker, the VOICECRAFTER may set channel or speaker gains to low, which will affect the AERL.
Channel default settings also play an important part in determining AERL and ERLE values. When connecting a microphone mixer
directly into a VOICECRAFTER, be sure that Channel 2 is set for line level input. The Channel 2 default gain will depend on the output
level of the microphone mixer; the end result being that the EC-Si is approximately –20dB with normal speech or white noise.

AERL and ERLE values can more easily be achieved by properly adjusting Channel gain settings, and by paying attention to appropriate
microphone and speaker placement. NOTE: It is recommended that microphone and speakers be placed apart from each other to
prevent direct coupling between speaker output and mic input (4-5 feet is a good distance). For best performance: If ceiling speakers
are being used, try and use table mics. If ceiling mics are being used, try using a speaker mounted on a wall.

Mix-Minus

When a mixer is connected to both
output signal never be fed back to the VOICECRAFTER input. Therefore, the mixer must provide an output to the local sound
reinforcement system, which includes all signals (near end and far end). In addition, the mixer must also provide an output to the
VOICECRAFTER, which includes only local signals (near end). This is known as a ‘mix-minus’ output.

a VOICECRAFTER and a local sound reinforcement system, it is essential that VOICECRAFTER

8

SETUP PROCEDURES

Connecting up to 2 microphones directly to the VOICECRAFTER.

1. Connect the Main Output of the VOICECRAFTER to the input of the amplifier. Adjust amplifier for no output level. Connect

microphones to the VOICECRAFTER using 2-conductor shielded cable.

2. Apply power to the System. The VOICECRAFTER will attempt to train, wait for train cycle to complete before continuing (send and

receive LED’s will blink 2 or more times then stop). Connect the provided serial cable to the VOICECRAFTER and the computer.

Open BiampWin on your PC. Click on File, then Connect to retrieve the VOICECRAFTER’s settings. Click on Fully Disabled in the

AutoAdaptation section.

3. Enable the internal white noise generator, click on the Noise box in the Main Output section (enabled is checked, disabled is

unchecked, white noise sounds like hiss). The Receive LED on the VOICECRAFTER will be green when white noise is being

generated. Set the Main Output Level (via the Pull-down menu) for 0dB. Adjust the amplifier level so that 72dB (‘A’ weighted setting)

of sound pressure is measured approximately 3 Inches (7.5 cm) in front of the microphone. (There is a screwdriver adjusted level pot

on the rear panel of the VOICECRAFTER that will provide more gain if needed, but having the level pot set to the lowest position will

still allow audio to pass.)

Hint: If a sound pressure level meter is not available, do not enable the white noise, instead have someone speak into the mic at

normal speech levels. The use of a Sound Pressure Level Meter is STRONGLY recommended.

4. Adjust the trim control on the rear panel of the VOICECRAFTER, so that the Channel 1 peak LED is lit with the white noise on (or

speech if SPL meter isn’t available), then back the trim control off until the trim LED goes off. Repeat this step for the second

microphone and make adjustments to Channel 2.

5. Mute Channel 2 by clicking on the Mute box located in the Channel 2 section of the software (checked is muted, unchecked is

unmuted). Look in the Averages section of the Control Software and view the EC_Si section. This value is automatically updated

every 2 seconds. Adjust the Channel 1 Gain (VOICECRAFTER software) so that the average EC_Si is approximately -20dB.

Unmute Channel 2, then mute Channel 1 and adjust Channel 2 Gain for an EC_Si of –20dB. Unmute Channel 1 and turn the white

noise off.

6. Select –10dB on the Main Output’s pull-down menu. Turn on the white noise again, measure the AERL in the Averages section of

the Control Software. This number should be a positive number between +2dB and +20dB. Turn off the white noise. Click on the

Train button bringing up a train menu. Using the pull-down menu set the Target AERL to the same value as measured. Click on the

Config button at the bottom of the train screen to begin a Configuration Train Cycle. The VOICECRAFTER will use white noise to

perform the Configuration Train Cycle.

Hint: If a SPL meter is not available, adjust the speaker level for a comfortable listening level in the room (still using white noise).

Hint: If the measured AERL is not between +2dB and +20dB, adjust the level of the amplifier either up or down. Increasing amplifier

level will lower AERL and decreasing amplifier level will increase AERL.

7. Training results will be displayed in the training menu by clicking the ‘OK’ button on the ‘Training Done’ screen. Once acceptable

training responses have been achieved (AERL within +/-2dB of set target, and ERLE >7 see hints below) set AutoAdaptation to

Fully Enabled, store the resulting configuration by clicking on the Store button followed by the desired memory location on the ‘pop-

up’ menu. The VOICECRAFTER will power up into the mode stored into the Preset 1 location. Presets 2~5 can be used to store

room configurations for different rooms (roll about applications), or different room configurations where mics and speakers are moved

around.

Hint: If training results are not achieved adjust AERL target +/-2dB depending on direction of white noise adjustment during

Configuration train. Example: During a train, if white increases, increase AERL target by 2dB. If white noise decreases during train,

decrease AERL target by 2dB. Retrain the VOICECRAFTER after any AERL target changes

Hint: For most rooms the ERLE should be 8dB or greater. In some less reverberant rooms a lower ERLE may be acceptable. A low

ERLE in a highly reflective room means that the echo canceller may not be able to adapt quickly to changes in the room. In a more

absorptive room the echo canceller may not need to work as hard, and therefore the ERLE can be a lower value without any adverse

effect on the echo cancellers performance.

9

SETUP PROCEDURES

Using an external microphone mixer without local sound reinforcement.

1. Connect the Main Output of the VOICECRAFTER to the input of the amplifier. Adjust amplifier for no output level. The output of the

external mixer should be connected to Channel 2 of the VOICECRAFTER using 2-conductor shielded cable. Microphones are then

connected to the inputs of the external mixer.

2. Apply power to the System. The VOICECRAFTER will attempt to train, wait for train cycle to complete before continuing (send and

receive LED’s will blink 2 or more times then stop). Connect the provided serial cable to the VOICECRAFTER and the computer.

Open BiampWin on your PC. Click on File, then Connect to retrieve the VOICECRAFTER’s settings. Click on Fully Disabled in the

AutoAdaptation section.

3. Channel 2 of the VOICECRAFTER must be configured for a line level input. Click on Mode under Channel 2; use the pull-down menu

to select Line Input (Balanced or Unbalanced depending on mixer used).

4. Adjust the Input level and trim controls of the mic mixer so that proper gain structure and levels are established in the mixer (the peak

LED is occasionally lit during speech, if output metering is available activity will be detected).

5. Enable the internal white noise generator, click on the Noise box in the Main Output section (enabled is checked, disabled is

unchecked, white noise sounds like hiss). The Receive LED on the VOICECRAFTER will be green when white noise is being

generated. Set the Main Output Level (via the Pull-down menu) for 0dB. Adjust the amplifier level so that 72dB (‘A’ weighted setting)

of sound pressure is measured approximately 3 Inches (7.5 cm) in front of the microphone. (There is a screwdriver adjusted level pot

on the rear panel of the VOICECRAFTER that will provide more gain if needed, but having the level pot set to the lowest position will

still allow audio to pass.)

Hint: If a sound pressure level meter is not available do not enable the white noise, instead have someone speak into the mic at

normal speech levels. The use of a Sound Pressure Level Meter is STRONGLY recommended.

6. Adjust the trim control on the rear panel of the VOICECRAFTER, and/or the external mixer output, so that the Channel 2 peak LED is

lit with the white noise on (or speech if SPL meter isn’t available), then back the trim control off until the trim LED goes off.

7. Look in the Averages section of the Control Software and view the EC_Si section. This value is automatically updated every 2

seconds. Adjust the Channel 2 Gain (VOICECRAFTER software) so that the average EC_Si is approximately -20dB. Turn the white

noise off.

8. Select –10dB on the Main Output’s pull-down menu. Turn on the white noise again, measure the AERL in the Averages section of

the Control Software. This number should be a positive number between +2dB and +20dB. Turn off the white noise. Click on the

Train button bringing up a train menu. Using the pull-down menu set the Target AERL to the same value as measured. Click on the

Config button at the bottom of the train screen to begin a Configuration Train Cycle. The VOICECRAFTER will use white noise to

perform the Configuration Train Cycle.

Hint: If a SPL meter is not available, adjust the speaker level for a comfortable listening level in the room (still using white noise).

Hint: If the measured AERL is not between +2dB and +20dB, adjust the level of the amplifier either up or down. Increasing amplifier

level will lower AERL, and decreasing amplifier level will increase AERL.

9. Training results will be displayed in the training menu by clicking the ‘OK’ button on the ‘Training Done’ screen. Once acceptable

training responses have been achieved (AERL within +/-2dB of set target, and ERLE >7 see hints below) set AutoAdaptation to

Fully Enabled, store the resulting configuration by clicking on the Store button followed by the desired memory location on the ‘pop-

up’ menu. The VOICECRAFTER will power up into the mode stored into the Preset 1 location. Presets 2~5 can be used to store

room configurations for different rooms (roll about applications), or different room configurations where mics and speakers are moved

around.

Hint: If training results are not achieved adjust AERL target +/-2dB depending on direction of white noise adjustment during

Configuration train. Example: During a train, if white increases, increase AERL target by 2dB. If white noise decreases during train,

decrease AERL target by 2dB. Retrain the VOICECRAFTER after any AERL target changes

Hint: For most rooms the ERLE should be 8dB or greater. In some less reverberant rooms a lower ERLE may be acceptable. A low

ERLE in a highly reflective room means that the echo canceller may not be able to adapt quickly to changes in the room. In a more

absorptive room the echo canceller may not need to work as hard, and therefore the ERLE can be a lower value without any adverse

effect on the echo cancellers performance.

10

SETUP PROCEDURES

Using an external microphone mixer with local sound reinforcement.

1. Connect the mix-minus output of the mixer (containing only local speech) to the Channel 2 input of the VOICECRAFTER. Connect the

Main Output of the VOICECRAFTER to an input of the mixer (this signal should only be routed to the amplifier and NOT fed back in to

the Channel 2 input of the VOICECRAFTER.) Connect the output of the mixer containing all audio signals to the amplifier. Connect

the Main Output of the VOICECRAFTER to the input of the amplifier. Adjust amplifier for no output level. The output of the external

mixer should be connected to Channel 2 of the VOICECRAFTER. 2-conductor shielded cable should be used for all connections.

Microphones are then connected to the inputs of the external mixer.

2. Apply power to the System. The VOICECRAFTER will attempt to train, wait for train cycle to complete before continuing (send and

receive LED’s will blink 2 or more times then stop). Connect the provided serial cable to the VOICECRAFTER and the computer.

Open BiampWin on your PC. Click on File, then Connect to retrieve the VOICECRAFTER’s settings. Click on Fully Disabled in the

AutoAdaptation section.

3. Channel 2 of the VOICECRAFTER must be configured for a line level input. Click on Mode under Channel 2; use the pull-down menu

to select Line Input (Balanced or Unbalanced depending on mixer used).

4. Adjust the Input level and trim controls of the mic mixer so that proper gain structure and levels are established in the mixer (the peak

LED is occasionally lit during speech, if output metering is available activity will be detected).

5. Enable the internal white noise generator, click on the Noise box in the Main Output section (enabled is checked, disabled is

unchecked, white noise sounds like hiss). The Receive LED on the VOICECRAFTER will be green when white noise is being

generated. Set the Main Output Level (via the Pull-down menu) for 0dB. Adjust the amplifier and/or mixer levels so that 72dB (‘A’

weighted) of sound pressure is measured approximately 3 Inches (7.5 cm) in front of the microphone. (There is a screwdriver adjusted

level pot on the rear panel of the VOICECRAFTER that will provide more gain if needed, but having the level pot set to the lowest

position will still allow audio to pass.)

Hint: If a sound pressure level meter is not available have someone speak into the mic at normal speech levels. The use of a Sound

Pressure Level Meter is STRONGLY recommended.

6. Adjust the trim control on the rear panel of the VOICECRAFTER, and/or the external mixer output, so that the Channel 2 peak LED is

lit with the white noise on (or speech if SPL meter isn’t available), then back the trim control off until the trim LED goes off.

7. Look in the Averages section of the Control Software and view the EC_Si section. This value is automatically updated every 2

seconds. Adjust the Channel 2 gain (VOICECRAFTER software) so that the average EC_Si is approximately -20dB. Turn the white

noise off.

8. Select –10dB on the Main Output’s pull-down menu. Turn on the white noise again, measure the AERL in the Averages section of

the Control Software. This number should be a positive number between +2dB and +20dB. Turn off the white noise. Click on the

Train button bringing up a train menu. Using the pull-down menu set the Target AERL to the same value as measured. Click on the

Config button at the bottom of the train screen to begin a Configuration Train Cycle. The VOICECRAFTER will use white noise to

perform the Configuration Train Cycle.

Hint: If a SPL meter is not available, adjust the speaker level for a comfortable listening level in the room (still using white noise).

Hint: If the measured AERL is not between +2dB and +20dB, adjust the level of the amplifier either up or down. Increasing amplifier

level will lower AERL, and decreasing amplifier level will increase AERL.

9. Training results will be displayed in the training menu by clicking the ‘OK’ button on the ‘Training Done’ screen. Once acceptable

training responses have been achieved (AERL within +/-2dB of set target, and ERLE >7 see hints below) set AutoAdaptation to

Fully Enabled, store the resulting configuration by clicking on the Store button followed by the desired memory location on the ‘pop-

up’ menu. The VOICECRAFTER will power up into the mode stored into the Preset 1 location. Presets 2~5 can be used to store

room configurations for different rooms (roll about applications), or different room configurations where mics and speakers are moved

around.

Hint: If training results are not achieved adjust AERL target +/-2dB depending on direction of white noise adjustment during

Configuration train. Example: During a train if white increases, increase AERL target by 2dB. If white noise decreases during train,

decrease AERL target by 2dB. Retrain the VOICECRAFTER after any AERL target changes

Hint: For most rooms the ERLE should be 8dB or greater. In some less reverberant rooms a lower ERLE may be acceptable. A low

ERLE in a highly reflective room means that the echo canceller may not be able to adapt quickly to changes in the room. In a more

absorptive room the echo canceller may not need to work as hard, and therefore the ERLE can be a lower value without any adverse

effect on the echo cancellers performance.

11

OPTIONS

The Codec input and output have an isolation transformer option available. Installation of these transformers requires soldering and
disassembly of the unit. The IT-B transformers are used for this option (BIAMP PN# 909.0019.00). To install these transformers, turn
power off to the VOICECRAFTER, dis-connect the power supply via the DIN connector, remove the 4 screws on the side of the
VOICECRAFTER (2 on each side), and the one screw on the rear and front section of the top panel. Remove the top-panel, and also
remove the 4 screws (near the rack mounting holes) that attach the front panel to the chassis.

Stand-off

2-Wire PCB

Models Only

VOICECRAFTER Plus

Stand-off

Remove the 9 screws that hold the PCB to the chassis (marked by arrows in the diagram above). If installing transformers into a
VOICECRAFTER Plus, remove the 2-wire PCB then the 3 stand-offs located under the PCB. Carefully slide the strain relief off of the
power supply DIN connector on the rear panel. At this point the PCB should be lifted from the chassis. If desired, the DIN connector can
be de-soldered, making the installation of the transformers easier, but this installation can be completed with the DIN connector attached to
the PCB.

S5

Codec Out

connector

J4

C319 C318

C406 C405

R324

T5

Codec In

connector

J3

T2

C305 C306

R321

Locate the transformer positions T2 and T5 located just beneath the Codec Input and Output connectors. De-solder C305, C306, C319
and C318 from the PCB. Leave resistors R324 and R321 in place (the transformers will fit over them). Insert the transformers into the
PCB, ensuring that the pin with the red dot on the transformer is inserted into the square pad of the PCB. Solder the pins of the
transformer into place. Put the PCB back in the chassis, put the screw back into the chassis, and attach the front panel and the lid. Power
the VOICECRAFTER back up. Installation of the isolation transformers is complete.

12

CONNECTING EXTERNAL DEVICES

Codecs

:

Many codecs have different audio interface levels. In order to accommodate these versatile devices, the VOICECRAFTER is able to
accept these different audio levels. The VOICECRAFTER has a push-button selector switch on the rear panel (between the codec input
and codec output). This switch selects either 0 dB or –20 dB codec levels. There is also +/-12dB of adjustment available via the control
software. NOTE: In order to maintain proper balance of codec levels, if you adjust a parameter in one direction, the other parameter
should be adjusted in the opposite direction and at the same level. Example: With the VOICECRAFTER set to communicate at 0dB
nominal codec level (and the codec is a –10dB device), then adjust the Codec Output to –10 dB via the pull-down menu, and adjust the
codec input to +10dB via it’s pull-down menu. This subtracts 10dB from the output signal, and adds 10dB to the input signal.

1. Connect the audio output of the codec to the Codec Input of the VOICECRAFTER.

2. Connect the audio input of the codec to the Codec Output of the VOICECRAFTER.

BIAMP SYSTEMS

27V

50/60 Hz

27 watts

class 2 wiring

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

phone line

setup

2-wire interface

control

main out

aux inaux out

-20dB
0dB

codec

level

codec out codec in

Inputs

trimlevel

+10

Channel 2 Channel 1

Audio Input

Audio Output

Video Input
Video Output

trim

+10

VOICECRAFTER

Aux Port

:

The VOICECRAFTER provides a mono-summing connection for a VCR, but the Aux Port can also be used as a second codec interface if
needed. NOTE: The Aux Port of the VOICECRAFTER has 2 modes of operation: 1) VCR mode: allowing alternating use of the Aux Input
and Aux Output. This is useful when using a consumer grade VCR, since during recording these types of VCR’s will send the recording
signal back out of the VCR’s output, thus causing feedback in an Echo Canceller. 2) Bridge Mode: Allowing the Aux Input and Aux output

nd

to be active at the same time. This is useful when connecting a 2

codec to the VOICECRAFTER.

VCR

:

1. Connect the output of the VCR to the Aux Input. If connecting to a Stereo VCR: Connect the left and right inputs to input RCA jacks.

If connecting to a mono VCR: Connect the VCR input to either RCA inputs, a ‘Y-cable’ is not necessary.

2. Connect the input of the VCR to the Aux Output of the VOICECRAFTER. If connecting to a Stereo VCR: Connect the left and right

inputs to the RCA jacks. If connecting to a mono VCR: Connect the VCR output to either RCA inputs.

3. Set the VOICECRAFTER to VCR mode by selecting VCR or Bridge in the Aux section of the Control Software. When the Aux Port is

in the Play condition the Aux Output is active, and when the Aux Port is in the Record condition, the Aux Input is active.

codec out

-20dB
0dB

codec

level

Inputs

trimlevel

+10

codec in Channel 2 Channel 1

trim

+10

VOICECRAFTER

27V

50/60 Hz

12 watts

class 2 wiring

BIAMP SYSTEMS

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

phone line

setup

2-wire interface

control

main out

aux inaux out

13

Audio Video

In
Out

CONNECTING EXTERNAL DEVICES

Second Codec

1. Connect the Audio output of the 2

5. Connect the audio input of the 2

6. Set the Aux port to Bridge mode by selecting Bridge in the Aux section of the Control Software.

:

nd

codec to the Audio Input of the VOICECRAFTER.

nd

codec to the Aux Input of the VOICECRAFTER.

codec out

-20dB
0dB

codec

level

Inputs

trimlevel

+10

codec in Channel 2 Channel 1

Audio Input

Audio Output

Video Input
Video Output

trim

+10

VOICECRAFTER

27V

50/60 Hz

12 watts

class 2 wiring

BIAMP SYSTEMS

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

phone line

setup

2-wire interface

control

main out

aux inaux out

2-Wire Interface

:

The VOICECRAFTER Plus models can be used in an audio only application, or a telephone conference can be bridged into a conference
during a videoconference. NOTE: The VOICECRAFTER Plus 2-Wire interface will only connect to an ANALOG telephone system.

1. Connect the analog phone line to the RJ11 jack labeled ‘line’.

2. Connect an analog telephone to the RJ11 jack labeled ‘phone’.

The VOICECRAFTER Plus provides DTMF and Tone dialing. Select DTMF or Tone via the Control Software. 2-wire dialing can be
accomplished via the Control Software in the Dial Pad section. Connection and dis-connection of the phone line can be done in the 2-wire
section of the Control Software, via 3

rd

party controllers, or by the VOICECRAFTER TTC. Gain can be added or subtracted via the Tx pull-

down menu on the Control Software.

BIAMP SYSTEMS

27V

50/60 Hz

12 watts

class 2 wiring

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

phone line

setup

2-wire interface

control

main out

aux inaux out

codec out

-20dB
0dB

codec

level

Inputs

trimlevel

+10

codec in Channel 2 Channel 1

trim

+10

VOICECRAFTER

14

RS-232 CONTROL

The VOICECRAFTER has two RS-232 Serial Ports, which allow it to be controlled by a computer (see Front & Rear Panel Features on pg.

2). In addition to the PC Control Software, the VOICECRAFTER offers two other methods of computer control.

t-Commands: This method provides advanced commands, which allow the computer to retrieve or edit various VOICECRAFTER settings.
For complete details about using the VOICECRAFTER with a computer, including t-commands, contact BIAMP Systems for the manual
"Computer

ASCII Commands: This method uses a variety of commands for controlling the VOICECRAFTER and VOICECRAFTER Plus. For
complete details about using the VOICECRAFTER with a computer, including ASCII Commands, contact BIAMP Systems for the manual
"Computer

NOTE: The Setup port (DB9 male) is for use with BiampWin PC Control Software only. The Control Port (DB9 Female) should be used for
connection to the VOICECRAFTER TTC, or third-party controllers.

Setup Port: The 9-pin Sub-D (male) connector on the VOICECRAFTER rear panel provides the RS-232 compatible serial interface signals
used for computer control. The VOICECRAFTER Serial Port transmits serial data on pin 3 (TxD), receives serial data on pin 2 (RxD), and
provides a ground on Pin 5. The Data Terminal Ready (DTR) & Request To Send (RTS) output signals are connected to the +12 Volt
power supply (through a resistor) and are always asserted when the VOICECRAFTER power is on. Pins 7 & 8 are internally shorted
together, so it is not necessary to utilize the CTS and RTS lines during communications.

Control of ADVANTAGE® VOICECRAFTER ", or visit the website at www.biamp.com to download the manual.

Control of ADVANTAGE® VOICECRAFTER ", or visit the website at www.biamp.com to download the manual.

54321

9876

pin #1 = not used
pin #2 = Receive Data (RxD) input
pin #3 = Transmit Data (TxD) output
pin #4 = Data Terminal Ready (DTR) output
pin #5 = ground

Setup Port

The VOICECRAFTER only requires receive data (pin 2), transmit data (pin 3), and signal ground (pin 5) to be connected for successful
data communications. However, the PC may require that signals be present on the Data Set Ready, Clear To Send, or Carrier Detect
inputs, as well as the Receive data, Transmit data, and Signal Ground pins. Success or failure depends entirely on the actual computer
hardware and software being used. When trying to solve an interfacing problem, the most important thing to remember is that an output of
one device should connect to one or more inputs of the other device, and that two outputs should never be connected together. Also, keep
in mind that the RS-232 specification calls for the cable length to be no greater than 50 feet (although it is not unusual to be able to operate
over distances of 150 to 250 feet), and the connectors must be of the appropriate gender (male or female) to mate properly. For best
results, a shielded cable should be used, with the shield connected to chassis ground. Since the VOICECRAFTER serial interface ground
is also tied (indirectly) to the analog signal ground, undesirable ground loops may occur when the VOICECRAFTER is connected to a PC
(if the system grounding is not carefully designed). For best performance, the PC ground and the chassis ground of the VOICECRAFTER
should be at the same potential, and the PC should get AC power from the same source as the VOICECRAFTER (and any other audio
equipment which is connected to the VOICECRAFTER). Since most laptop computers are isolated from earth ground, this should rarely
pose a problem.

Control Port: The 9-pin Sub-D (female) connector on the VOICECRAFTER rear panel provides the RS-232 compatible serial interface
signals used for third-party controllers, or the VOICECRAFTER TTC.

12345

6789

pin #1 = +5 Volts
pin #2 = Transmit Data (TxD) output
pin #3 = Receive Data (RxD) input
pin #4 = not used
pin #5 = ground

pin #6 = not used
pin #7 = not used
pin #8 = not used
pin #9 = not used

pin #6 = not used
pin #7 = rts
pin #8 = cts
pin #9 = not used

Control Port

15

APPLICATIONS

Conferencing with mics connected directly to the VOICECRAFTER

PC for
Setup

27V

50/60 Hz

12 watts

class 2 wiring

BIAMP SYSTEMS

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

C

T

T

E

R

T

F

A

R

C

E

C

I

O

V

E

G

A

T

N

A

V

D

A

1

VOLUME

MUTE

VCR MUTE

5

4

3

2

PRESETS

DEF

ABC

3

1

2

2

3

1

MNO

JKL

GHI

6

5

6

5

4

4

PRS

7

7

HOLD / PAUSE

WXY

TUV

9

8

9

8

OPER

FLASH / STORE

0

0

#

#

®

VOICECRAFTER TTC

-20dB

setup

control

phone line

2-wire interface

main out

0dB

codec

level

aux inaux out

codec out

codec in Channel 2 Channel 1

Inputs

trimlevel

+10

trim

VOICECRAFTER

+10

To Phone

To Codec

PHONE

SPEED DIAL

VOICECRAFTER Plus

115V

115/230 VAC

50/60 Hz 160 Watts

ADVANTAGE D60EQ

MADE IN U.S.A.

115V: 2A SB fuse
230V: 1A SB fuse

*

F

E

U

S

S

U

E

F

*

*

F

E

S

common

autoformer

input

70V

100V

D60EQ

+ input

Ω

4

- input
gnd

Ω

8

16

APPLICATIONS

Connecting a mixer without local Sound Reinforcement

PC for
Setup

serial port

27V

~

50/60 Hz
27 watts

class 2 wiring

27V

50/60 Hz

12 watts

class 2 wiring

link port link expansion

BIAMP SYSTEMS

~

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

C

T

T

E

R

T

F

A

R

C

E

C

I

O

V

E

G

A

T

N

A

V

D

A

45

23

1

PRESETS

DEF

ABC

VOLUME

1

3

2

2

3

1

MNO

JKL

GHI

6

5

6

5

4

4

WXY

PRS

TUV

9

8

7

7

9

8

OPER

MUTE

0

0

#

#

VCR MUTE

®

VOICECRAFTER TTC

logic outputs

logic inputs

PHONE

HOLD / PAUSE

FLASH / STORE

SPEED DIAL

setup

control

out

in

phone line

2-wire interface

To Phone

auxmain aux 2 aux 1

outputs auxiliary inputs

main out

input

channel 8

aux inaux out

input

d. out

d. out

channel 7

codec

level

codec out

To Codec

-20dB
0dB

input

channel 6

d. out

input

channel 5

d. out

Inputs

trimlevel

codec in Channel 2 Channel 1

+10

Channel 1

input

channel 4

+10

input

d. out

d. out

channel 3

trim

VOICECRAFTER

VRAM

input

channel 2

d. out

input

channel 1

d. out

VOICECRAFTER Plus

120 watt

output

LISTED 2 Z 91

COMMERCIAL

R

AUDIO EQUIP

USE ONLY WITH

250V FUSE

~

115/230V AC 50/60 Hz 375 VA

CMA 120

BIAMP SYSTEMS

an affiliate of

directxfmr

E158021

R

C

6.3A - 115V

3.15A -230V

Rauland-Borg Corp

4

com

8

25V

50V
70V

chime

line
out

level

remote

+10V c

rec
out

level

max
min

out

threshold adjust

min

mute/

chime

amp

in

stacking in

+

send/return

pre
out

auto mutecompressor

phantom pwr

auto mute

manual mute

mute

-40

level

-20

m

o

n

trim

on

priority

off

line

max

mic

min

phantom pwr

auto mute

manual mute

mute

-40

level

priority

-20

i

m

o

n

trim

on
off

line
mic

l

a

n

i

max
min

phantom pwr

auto mute

manual mute

mute

-40

level

priority

-20

m

o

n

trim

on
off

line
mic

l

a

n

max
min

phantom pwr

auto mute

manual mute

mute

-40

level

priority

-20

n

i

m

o

n

trim

on
off

line

mic

l

a

n

i

max
min

phantom pwr

auto mute

manual mute

mute

l

a

level

max
min

priority

trim

on
off

line
mic

+ + + + + +

channel 1channel 2channel 3channel 4channel 5channel 6

phantom pwr

auto mute

-40

-20

n

i

m

o

n

manual mute

mute

-40

level

priority

-20

l

a

n

i

m

max

o

n

trim

min

on
off

line
mic

tel

l

a

max
min

17

APPLICATIONS

Connecting a mixer with local Sound Reinforcement

PC for
Setup

27V

~

50/60 Hz
27 watts

class 2 wiring

27V

~

50/60 Hz

12 watts

class 2 wiring

serial port

link port link expansion

BIAMP SYSTEMS

Portland, Oregon

an affiliate of

Rauland-Borg Corp.

MADE IN U.S.A.

V

E

G

A

T

N

A

V

D

A

23

1

PRESETS

VOLUME

1

1

GHI

4

4

PRS

7

7

MUTE

VCR MUTE

logic outputs

logic inputs

C

T

T

E

R

T

F

A

R

C

E

C

I

O

45

DEF

ABC

PHONE

3

2

2

3

MNO

JKL

6

5

6

5

HOLD / PAUSE

WXY

TUV

9

8

9

8

OPER

FLASH / STORE

0

0

#

#

®

SPEED DIAL

setup

control

out

in

phone line

2-wire interface

To Phone

auxmain aux 2 aux 1

outputs auxiliary inputs

main out

input

channel 8

aux inaux out

input

d. out

channel 7

codec out

codec

level

d. out

To Codec

input

channel 6

-20dB
0dB

codec in Channel 2 Channel 1

d. out

input

channel 5

+10

d. out

Inputs

trimlevel

input

channel 4

+10

input

d. out

trim

d. out

channel 3

VOICECRAFTER

VRAM

input

channel 2

VOICECRAFTER Plus

d. out

input

channel 1

d. out

VOICECRAFTER TTC

USE ONLY WITH

250V FUSE

110V

level 2

115V: 3A SB
230V: 1.5A SB

115/230 VAC
50/60 Hz
300 Watts max

input 2 input 1

gnd---+ + gnd---

output 2

output 1

--- + + ---

level 1

stereo
mono bridge

BIAMP SYSTEMS

PORTLAND,OREGON

an affiliate of

Rauland-Borg Corp

MADE IN U.S.A.

CPA 130

18

TROUBLESHOOTING

What if I can’t make any gain changes in the BiampWin software?

Make sure AutoAdaptation is set to ‘Fully Disabled’

What if I can’t communicate with the VOICECRAFTER?

Make sure you are connecting via the appropriate PC Comm port. (Comm 1 is the ONLY port you can
use in most laptop computers). Make sure you are trying to communicate with the upper Setup Port on
the VC using the provided PC Serial Cable. Make sure you have the baud rate set to 9600. Make sure
you are using the supplied PC serial cable. Make sure you have BiampWin version 2.5 or greater.

What if I need more speaker gain?

Reduce the AERL target by 2 dB and retrian the VC. This will lower the amount of acoustic room loss the
VC expects and the VC will raise the main output gain by 2dB. Do not make changes to the Amplifier gain.

What if the speaker gain is too high?

Increase the AERL target by 2dB and retrain the VC. This will increase the amount of acoustic room loss
the VC expects and the VC will lower the Main Output gain by 2dB. Do not make changes to the Amplifier
gain.

What if I can’t reach my AERL Target?

Check for clipping in the mixer or a loose connection to the VC inputs. By following the setup procedure in

pages 9~11 the VC should set itself to the measured AERL value.

What if I can’t reach an ERLE of >7dB?

Retrain the system, make sure the room is quiet with no one speaking or making any noise. Noises that

occur during a train can confuse the echo canceller and produce inaccurate measurements.

Make sure there are no clipped signals being fed to the VC.

Make sure the EC_Si is –20dB with 72dB of sound pressure measured in front of the mic.

Make sure the Peak LED is not continually lit during speech. (It should be only ocasionally lit.)

In some highly obsorbant rooms it may be difficult to acoustically excite a room without creating too much
far-end volume. If the AERL is within +/-2dB of the Target AERL and the ERLE is low, try conferencing
with another site and check the settings. Move around the room while speaking and check the VC’s
adaption. Some rooms will require a lot of processing, some will require more. It all depends on each
rooms acoustic characteristics.

What if I still need help?

Contact our VOICECRAFTER Technical Support Center at 1-800-826-1457, Contact Kerry White at

[e-mail]

, or contact your local distibutor.

19

THIRD-PARTY CONTROL

To perform third-party control of the VOICECRAFTER use the bottom ‘Control Port’. This port is setup for 9600
baud (which cannot be changed), 8 data bits, no parity, and 1 stop bit. Pin 2 is used to receive data, pin 3 sends
data, and Pin 5 is the ground pin. Pin #1 contains 5VDC for powering the TTC receiver. The following is a list of
some third-party commands:

s-Commands

The ‘s’ commands (used by the TTC Table Top Controller) allow limited control of functions without

making any permanent changes to the VOICECRAFTER configuration settings. Each s-Command
consists of a start byte (lower case 's') followed by two command bytes (also lower case letters), but not
followed by a carriage return. Each of the s-Commands will generate a response from the
VOICECRAFTER. The response packet consists of two ASCII characters.

s-Commands

Command ASCII Response Command ASCII Response

User Volume
Increase
User Volume
Decrease
System Mute s i j HV Dial 6 s e m None
System unmute s i l FV Dial 7 s c n None
VCR Record Mode s q j O[ Dial 8 s d n None
VCR Play Mode s q l F[ Dial 9 s e n None
System Mute
Toggle
Connect 2-wire s j m OW if connected Dial # s e o None
Hang-up 2-wire s l m FW Dial * s c o None
Dial 1 s c l None Hook Flash s c p None
Dial 2 s d l None Hold 2-wire (toggle) s k m None
Dial 3 s e l None

**NOTE – DTMF tones can not be heard through the main output unless the DTMF Mix is enabled. To enable
DTMF Mix in BiampWin, click on the DTMF Mix box located in the 2-wire section of the control software.

s g z OB

s h z FB

s i z HV if muted

Dial 4 s c m None

HB if limit

Dial 5 s d m None

HB if limit

Dial 0 s d o None

FV if unmuted

20

SPECIFICATIONS AND BLOCK DIAGRAM

Frequency Response: Output Impedance

Wide (50Hz- 7.2KHz) Narrow (300Hz – 3.4kHz) +0/-1dB Codec 100 Ohms

THD+Noise Aux Out 50 ohms

(50Hz~7.2kHz @ 0dBu): < 1% Main Output 100 ohms

Input Range: Nominal Output:

Mic/Line (trim) 0dBu to -40dBu Main Output -20dBu to 0dBu

Codec (switch) 0dBu or –20dBu Codec Output -32dBu to +12dBu

Input Impedance: Power Requirements: 115/230VAC 50/60Hz

Mic inputs 600 ohm Power Consumption: < 27 Watts

Line Input 10k ohm Dimensions:

Codec input 600 ohm height (1 rack space) 1.75” (44mm)

Aux Input 10k ohm width 19” (483mm)

Phantom Power: 12 Volts DC (5mA max) depth 7.25” (184mm)

A/D & D/A Converters: 16-bit Weight: 5 lbs (2.27kg)

Mic 1

Mic 2

Main
Output

input

input

(+12V)

phantom

power

(+12V)

phantom

power

trim

discrete

transistor

preamp

trim

discrete

transistor

preamp

+10dB

+10dB

Level

Receive

Send

Pad

Signal

Peak

A/D

A/D

D/A

VOICECRAFTER Block Diagram

AEC

CPU

D/A

+

_

A/D

+

+

DSP Noise &
Speech Audio

D/A

_

A/D

_

2-wire option (VOICECRAFTER plus)

output

transformer

(option)

20dB

pad

input

transformer

(option)

20dB

pad

D/A

Hybrid

A/D

codec
output

codec

input

Aux

output

Aux

input

Line

Phone

21

WARRANTY

BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR

LIMITED WARRANTY TO THE ORIGINAL PURCHASER OF THE

PROFESSIONAL SOUND EQUIPMENT DESCRIBED IN THIS MANUAL.

BIAMP Systems expressly warrants this product to be
free from defects in material and workmanship for a
period of 5 YEARS from the date of purchase as a
new product from an authorized BIAMP Systems
dealer under the following conditions.

1. The Purchaser is responsible for completing and
mailing to BIAMP Systems, within 10 days of
purchase, the attached warranty application.

2. In the event the warranted BIAMP Systems product
requires service during the warranty period, BIAMP
Systems will repair or replace, at its option, defective
materials, provided you have identified yourself as the
original purchaser of the product to any authorized
BIAMP Systems Service Center. Transportation and
insurance charges to and from an authorized Service
Center or the BIAMP Systems factory for warranted
products or components thereof to obtain repairs shall
be the responsibility of the purchaser.

3. This warranty will be VOIDED if the serial number
has been removed or defaced; or if the product has
been subjected to accidental damage, abuse, rental
usage, alterations, or attempted repair by any person
not authorized by BIAMP Systems to make repairs; or
if the product has been installed contrary to BIAMP
Systems' recommendations.

4. Electro-mechanical fans, electrolytic capacitors,
and the normal wear and tear of appearance items
such as paint, knobs, handles, and covers are not
covered under this warranty.

5. BIAMP SYSTEMS SHALL NOT IN ANY EVENT BE
LIABLE FOR SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, INCLUDING LOST
PROFITS, LOSS OF USE, PROPERTY DAMAGE, INJURY
TO GOODWILL, OR OTHER ECONOMIC LOSS OF ANY
SORT. EXCEPT AS EXPRESSLY PROVIDED HEREIN,
BIAMP SYSTEMS DISCLAIMS ALL OTHER LIABILITY TO
PURCHASER OR ANY OTHER PERSONS ARISING OUT
OF USE OR PERFORMANCE OF THE PRODUCT,
INCLUDING LIABILITY FOR NEGLIGENCE OR STRICT
LIABILITY IN TORT.

6. THIS WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES EXPRESSED OR IMPLIED. BIAMP
SYSTEMS EXPRESSLY DISCLAIMS ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. THE REMEDIES SET
FORTH HEREIN SHALL BE THE PURCHASER'S SOLE
AND EXCLUSIVE REMEDIES WITH RESPECT TO ANY
DEFECTIVE PRODUCT. THE AGENTS, EMPLOYEES,
DISTRIBUTORS, AND DEALERS OF BIAMP SYSTEMS
ARE NOT AUTHORIZED TO MODIFY THIS WARRANTY
OR TO MAKE ADDITIONAL WARRANTIES BINDING ON
BIAMP SYSTEMS. ACCORDINGLY, ADDITIONAL
STATEMENTS SUCH AS DEALER ADVERTISEMENTS
OR REPRESENTATIONS DO NOT CONSTITUTE
WARRANTIES BY BIAMP SYSTEMS.

7. No action for breach of this warranty may be
commenced more than one year after the expiration of this
warranty.

Thank you for purchasing BIAMP SYSTEMS...

AMERICAN SOUND CRAFTSMANSHIP

Biamp Systems

10074 S.W. Arctic Drive

Beaverton, Oregon 97005

[phone]

http://www.biamp.com

585.0153.00

Declaration of Conformity

Biamp Systems, Inc., as the manufacturer, hereby declares that the following described product, in our
delivered version, complies with the provisions of the DIRECTIVES except as noted herein. In case of
alteration of the product, not agreed upon or directed by us, this declaration is no longer valid.



Product Models: ADVANTAGE
Product Description: Acoustic Echo Canceller and Acoustice Echo Canceller with Telephony Capability

Applicable EC Directives: EMC Directive (89/336/EEC), R&TTE Directive (1999/5/EEC),
LVD Directive (73/23/EEC)

Applicable Harmonized Standards: EN55103-1 emissions EN55103-2 immunity EN60065 safety

Special Considerations for Product Environment or Compliance:

Shielded cabling must be used for system connections. The apparatus is deemed incapable of
producing harmonic emissions or flicker levels sufficient enough to interfere with other apparatus as
noted in EN61000-3-2 and EN61000-3-3.

This apparatus operates from a removeable external power source at voltages below the levels
encompassed by the LVD. The external power source complies with the applicable requirements of
EN60065. The apparatus itself is outside of the scope of the LVD and presents no hazardous
voltages, as defined in the LVD. For compliance, the apparatus shall be powered only from the
separate CE marked Biamp Systems power source.

RF interference conducted through interconnect cabling may cause varying degrees of random
signal degradation. The effect of increased noise or distortion due to this interference is typically
masked by the desired signal. In no instance is operation inhibited.

The dialing function of the Voicecrafter Plus may not operate properly on certain European networks
due to the product’s DTMF tone levels.

The Technical Report/File is maintained at: Biamp Systems, Inc.
10074 S.W. Arctic Drive
Beaverton, OR USA 97005
phone: [phone] fax: [phone]
e-mail: [e-mail]

Authorized Representative: Steven Hedgepeth

Authorized Representative Signature:
Issued: April, 2000

VOICECRAFTER and VOICECRAFTER PLUS

FCC Part 68 Compliance Statement

This equipment complies with Part 68 of the FCC rules. Located on the equipment is a label that contains, among other
information, the FCC registration number and ringer equivalence number (REN.) If requested, this information must be
provided to the telephone company.

The REN is used to determine the quantity of devices that may be connected to the telephone line. Excessive RENs on the
telephone line may result in the devices not ringing in response to an incoming call. In most, but not all areas, the sum of the
RENs should not exceed five (5). To be certain of the number of devices that may be connected to the line, as determined by
the total RENs, contact the telephone company to determine the maximum REN for the calling area.

This equipment cannot be used on the telephone company-provided coin service. Connection to Party Line Service is subject
to State Tariffs.

If this equipment causes harm to the telephone network, the telephone company will notify you in advance that temporary
discontinuance of service may be required. If advance notice is not practical, the telephone company will notify the customer
as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary.

The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the
operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make the
necessary modifications in order to maintain uninterrupted service.

If trouble is experienced with this equipment, please contact: Biamp Systems, Inc.
10074 S.W. Arctic Dr.
Beaverton, OR 97005

If the trouble is causing harm to the telephone network, the telephone company may request that you remove the equipment
from the network until the problem is resolved.

This equipment uses the following USOC jacks: RJ11C

It is recommended that the customer install an AC surge arrester in the AC outlet to which this device is connected. This is to
avoid damaging the equipment caused by local lightening strikes and other electrical surges.

The telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic
device, including fax machines, to send any message unless such message clearly contains in a margin at the top or bottom of
each transmitted page or on the first page of the transmission, the date and time it is sent and an identification of the business
or other entity, or other individual sending the message and the telephone number of the sending machine or such business,
other entity or individual. (The telephone number provided may not be a 900 number or any other number for which charges
exceed local or long-distance transmission charges.)

Industry Canada CS-03 Compliance Statement

NOTICE: The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain
telecommunications network protective, operational and safety requirements as prescribed in the appropriate Terminal
Equipment Technical Requirements document(s). The Department does not guarantee the equipment will operate to the user's
satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local
telecommunications company. The equipment must also be installed using an acceptable method of connection. The
customer should be aware that compliance with the above conditions may not prevent degradation of service in some
situations.

Repairs to certified equipment should be coordinated by a representative designated by the supplier. Any repairs or
alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause
to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines and
internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural
areas.

Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection
authority, or electrician, as appropriate.

The Ringer Equivalence Number (REN) of this device is 0 (zero).

NOTICE: The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the maximum
number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any
combination of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the devices
does not exceed 5.

The standard connecting arrangement for this equipment is CA11A.