AMBE-1000 Digital Voice Systems, Inc., AMBE-1000 Datasheet - Page 12

• Manufacturer Part Number: AMBE-1000
• Manufacturer: Digital Voice Systems, Inc.

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The AMBE-1000 is not recommended for new designs.
Please refer to the AMBE-2000/2020 product line.
Product Introduction
General Information
Digital Voice Systems Inc.’s AMBE-1000™ Vocoder Chip is an extremely flexible, high-
performance, single chip, speech compression coder. It provides superior voice quality
at low data rates. It provides a real-time, full-duplex implementation of the standard-
setting AMBE voice compression software algorithm.
compression technology has been proven to outperform CELP, RELP, VSELP, MELP,
ECELP, MP-MLQ, LPC-10, and other competitive technologies. Numerous evaluations
have shown its ability to provide performance equal to today’s digital cellular systems
at under half the data rate.
applications throughout the world, including the next generation of digital mobile
communication systems.
The AMBE-1000™ Vocoder chip provides a high degree of flexibility in selecting the
speech and FEC (Forward Error Correction) data rates. The user can separately select
these parameters in 50 bps increments for total rates from 2.4 kbps to 9.6 kbps.
Typically for higher error rate channels, the user will apportion a greater percentage of
the total bit rate to FEC coding.
The AMBE-1000™ voice coder maintains natural voice quality and speech intelligibility
at rates as low as 2.4 kbits/sec. The AMBE algorithm’s low complexity allows it to be
fully integrated into a low cost, low power integrated circuit, the AMBE-1000™ Vocoder
Chip.
Advantages
The AMBE-1000 is not recommended for new designs.
Superior Voice Quality
Low Cost
No External Memory Required
Robust to Bit Errors & Background Noise
Variable Data Rates - 2.4 kbps to 9.6 kbps
Variable FEC Rates - 50 bps to 7.2 kbps
Very Low Power (65mW @ 3.3V, 0.11mW Deep Sleep)
Compact Single Chip Solution: 100 pin TQFP
Please refer to the AMBE-2000/2020 product line.
Visit us at www.dvsinc.com
page 12
The AMBE
voice compression algorithm is used in
DVSI’s patented AMBE voice