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AMBE-3000™ HDK
Digital Voice Systems, Inc.
The Speech Compression Specialists
Hardware Development Kit
(featuring the AMBE-3000™ Vocoder Chip!)
Experience the design flexibility of the
AMBE-3000™ Vocoder chip plus evaluate
AMBE®+2 Vocoder Performance, in one
easy to use tool!
The Digital Voice Systems, Inc. (DVSI) AMBE-3000™ HDK is a
comprehensive, evaluation, test and development platform
that helps product designers and manufacturing engineers gain
experience with low-bit-rate vocoders. Based on the AMBE3000™ series vocoder chips the HDK is the ideal reference design
for evaluation and test of DVSI’s vocoder performance. This
multipurpose vocoder tool enables users to explore the
capabilities and benefits of the AMBE-3000™ low-bit-rate
vocoder in real-time without investing in large amounts of
engineering time and hardware prototypes.
The AMBE-3000™ HDK gives engineers the insight required to
efficiently develop their own high performance low-bit-rate
narrowband communication systems. The AMBE-3000™ HDK
specifically uses inexpensive widely available circuit
components with easily attainable development tools so that
designers can understand how to ultimately produce low cost
products with a quick time to market.
The heart of AMBE-3000™ HDK is DVSI’s patented AMBE+2™ Voice
Compression technology. Embedded in the AMBE-3000™
vocoder chip this voice compression is an affordable and power
efficient vocoder solution that provides exceptional voice
quality at bit rates from 2000 to 9600 bps. Forward Error
Correction (FEC) is included to optimize robustness to
background noise and channel bit errors. Also, the AMBE-3000™
vocoder chip includes a number of advanced features such as:
AMBE-3000TM HDK Features
• The AMBE®+2 Vocoder with high quality speech
compression and FEC data rates that can be set from
2000 bps to 9600 bps.
• The development kit includes: circuit design details,
sample control software and reference documentation.
• Vocoder and hardware configuration via dipswitches or
jumpers or USB to PC interface.
• Encode decode files to/from a PC through the USB
interface.
• Real-time full-duplex communication between two HDK
boards using the RS-232 interface.
• Full Control of AMBE-30x0™ Vocoder Chip advanced
capabilities such as Soft decision FEC, Voice Activity
Detection (VAD), adaptive Comfort Noise Insertion (CNI)
and DTMF tones.
• Can be power with a 5 Volt DC power adapter or through
the USB connection to a PC.
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Voice Activity Detection (VAD), adaptive Comfort Noise
Insertion (CNI) and support for DTMF tones. This level of
performance has resulted in the successful deployment of
wireless communication systems in the most demanding
environments.
The AMBE-3000™ HDK vocoder board is equipped with industry
standard connections for fast and easy setup and operation.
An RCA jack and a handset connection allow analog voice
input/output for encoding/decoding real-time speech. A RS232 serial port is the data channel that delivers the compressed
bit stream between two AMBE-3000™ HDKs for real-time full
duplex communication. With the USB interface users can
connect the AMBE-3000™ HDK to a PC, to configure the channel
interface, encode (record) an analog input to a compressed
data file, and decode (playback) previously encoded files.
There are be a number of ways to configure the AMBE-3000™
HDK hardware. The user can select the vocoder rate and
control a variety of vocoder features from either a PC
connected to the USB interface or through dip switches and
jumpers. Additionally, the board provides test points for
extensive circuit probing and monitoring of data. All these
capabilities are ideal for comparing voice quality at various
rates, analyzing the compressed voice data I/O stream and
establishing customized interface requirements.
The AMBE-3000™ HDK is a complete hardware and software
package solution, with off-the-shelf availability. The
development kit includes the evaluation board, schematic
details, software routines for the on-board Microcontroller
(user is able to to recompile the AMBE-3000™ HDK source code
to achieve custom configurations), as well as reference circuit
designs. Documentation includes the AMBE-3000™ HDK User’s
Manual that describes the hardware and software features
and a Software Manual to explain details of the included
software source code.
The AMBE-3000™ HDK is a cost-effective vehicle that reduces
the time and up-front engineering expenses associated with
new product development. The value of DVSI’s AMBE-3000™
HDK goes beyond just simple hardware design. The integrated
AMBE+2™ vocoder technology has been thoroughly evaluated
and tested by international manufacturers under various
conditions using a variety of languages and has been
implemented worldwide. This field proven voice compression
technology assures that the developed end product is utilizing
the best low-bit-rate high quality vocoder available, leading
any communication system to be an overall success.
DVSI’s dedicated staff combine years of experience in vocoder
technology, with expertise in Digital Signal Processing, computer
software generation and hardware development. For more
information regarding our high-performance voice compression
solutions, contact DVSI today.
Technical Specifications
Analog Connections:
Line-In 3.5 mm Phono Audio Jack
Line-Out 3.5 mm Phono Audio Jack
Handset RJ-14 Full Duplex
Communication
Digital Connections:
Channel Data DB-9S RS-232 Serial Port
PC Connection USB Serial Port
Power:
Input Requirements 5 V DC @ 120 ma
Physical:
Size 5.844” x 4.36”
Weight 3.2 oz.
(Specifications subject to change.)
IMBE and AMBE+2 are trademarks and AMBE is a registered trademark of Digital Voice Systems, Inc., © Copyright Digital Voice Systems, Inc. 2008 All Rights Reserved. 7/08
234 Littleton Road
Westford, MA 01886
Tel: (978) 392-0002
Fax: (978) 392-8866
email: info@dvsinc.com
Web Site: www.dvsinc.com
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