Product Descriptions

Digital Voice Systems Inc.’s AMBE-2000™ 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. DVSI’s patented AMBE voice 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. The AMBE voice compression algorithm is used in applications throughout the world, including the next generation of digital mobile communication systems.

The AMBE-2000™ 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 2.0 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-2000™ voice coder maintains natural voice quality and speech intelligibility at rates as low as 2.0 kbits/sec. The AMBE algorithm’s low complexity allows it to be fully integrated into a low cost, low power integrated circuit, the AMBE2000™ Vocoder Chip.

The AMBE-2000™ Vocoder Chip offers similar features to DVSI’s AMBE-1000™ Vocoder Chip allowing it to be incorporated into systems already designed for the AMBE-1000™ and is interoperable with other DVSI products. The AMBE-2000™ Vocoder Chip delivers improved performance and enhanced modes such as 4.0 kbps toll quality speech and convolutional FEC coding. Along with these enhancements the AMBE-2000™ Vocoder Chip employs a control interface along with the variable data rates and FEC selection.

Product Advantages

• Superior Voice Quality

• Low Cost

• No External Memory Required

• Robust to Bit Errors & Background Noise

• Variable Data Rates - 2.0 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

Product Applications

• Satellite Communications

• Digital Mobile Radio

• Secure Communications

• Cellular Telephony and PCS

• Voice Multiplexing

• Voice Mail

• Multimedia Applications

Specifications

Actual product photos

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

We also provide ：