234 Littleton Road
Westford, MA 01886
Tel: (978) 392-0002
Fax: (978) 392-8866
email: [email protected]
Available in
128 pin LQFP
and BGA
Packages!
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. (0308)
(Specifications subject to change without notice.)
The AMBE-3000™ Vocoder Chip
employs DVSI’s latest AMBE+2™
voice coder technology.
The AMBE-3000™ Vocoder Chip is easily
configured to transmit and receive digitized
speech to and from most linear, a-law, or u-law
A/D-D/A codecs.
The encoder and decoder
functions are fully asynchronous
for maximum flexibility.
In Codec mode the AMBE-3000™ Vocoder Chip is configured to transmit and
receive digitized speech to and from most linear, a-law, or u-law A/D-D/A codecs
through either its SPI or McBSP serial port and the compressed channel data
uses one of the remaining interfaces. Alternatively, the AMBE-3000™ Vocoder
chip can be set-up to operate in packet mode, where both the speech and
compressed channel data are on the same interface. Packet mode also allows
for vocoder configuration, vocoder status information, as well as, the
transferring of speech and compressed data bits to/from the chip’s internal
encoder and decoder.
The AMBE-3000™ chip boasts numerous advanced design features such as
automatic Voice/Silence Detection (VAD), noise suppression, adaptive comfort
noise insertion (CNI), DTMF and Call Progress Tone detection/regeneration,
echo cancellation, low power modes and frame-by-frame “on-the-fly” rate
switching. Additionally, the chip includes variable rate Forward Error Correction
(FEC). The built-in FEC combines block and convolution codes with up to four
bits of Viterbi soft decision decoding. The quality of this FEC provides
exceptional robustness to background noise and intelligible speech in degraded
channel conditions, even with bit errors (BER) of up to 20%. This level of
performance can lead to the successful development and deployment of wireless
communication systems in the most demanding environments.
These features, combined with the chip’s small form factor (128 pin LQFP of
BGA package), make the
AMBE-3000™ Vocoder Chip
an ideal solution for
wireless applications where
bandwidth is at a premium
and low-data-rate, high-
voice-quality is imperative.
As the latest addition to
DVSI’s family of voice
compression products, the
AMBE-3000™ has
interoperable modes that
provide a seamless
migration path from systems
already using DVSI’s AMBE-2000™ and AMBE-1000™ Vocoder Chips.
The value of DVSI’s AMBE
®
Voice Compression Technology goes beyond low
bit rate and voice quality. It has been thoroughly evaluated and tested by
international manufacturers under various conditions using a variety of
languages. This assures the user is getting the best vocoder available and
makes the DVSI vocoder the logical choice without the need for additional
comparison tests. Plus the fact, that DVSI’s Voice Compression technology
has been implemented worldwide for more than 19 years, delivers the added
security of a field proven technology that can play a key role in making any
communication system an overall success.
Contact DVSI
Digital Voice Systems, Inc. specializes in the development
of low-bit-rate, high quality voice compression products
incorporating the patented IMBE™, AMBE® AMBE+™
and AMBE+2™ Voice Compression Technologies.
DVSI software and hardware voice compression
solutions are successfully implemented in both private
and standards-based digital communication systems
worldwide. DVSI’s Speech Compression technology is
the core component that enables original equipment
manufacturers to produce innovative designs with an
array of advanced features. Additional company
information and product details can be found online at
www.dvsinc.com.
Specifications
Electrical
Supply:
3.3 Volts
Core:
1.8 Volts
Physical
Package:
128 pin LQFP
(industrial grade)
Temperature Range:
-40°C to 85°C
(Operation)
-55°C to 150°C
(Storage)
Speech Interfaces
SPI, McBSP
8 bit ulaw or alaw @ 8 kHz.
16 bit linear* @ 8 kHz. or @ 32 kHz.
(*recommended for optimum performance)
Channel Interfaces
McBSP, UART, Parallel
Packet formatted data