ADT-4800

Adaptive Digital's proprietary 4800 bps speech compression algorithm

This speech compression software provides good speech quality at a low bit rate.

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Features List

  • Functions are C-callable.
  • Multi -Channel Implementation.
  • Capable of in-band synchronization.
  • Can be integrated with echo cancellers, and tone detection/regeneration.

Coding Rate: 4.8 kbps

Sampling Rate: 8 kHz

Delay: 37 msec

Availability

Platforms
Texas Instruments – TI TMS320C5000 C55x / C54x

ADT-4800 is available on the above Platforms: Other configurations are available upon request.

Specifications

ADT 4800 C55x

CPU UTILIZATION & MEMORY REQUIREMENTS
All memory requirements are in units of byte.
FunctionMIPS-Peak LoadingProgram MemoryData MemoryPer-channel Data Memory
Encode11.5
Decode1.73
Encode/Decode13.2399942400736/210

ADT 4800 C54x

CPU UTILIZATION & MEMORY REQUIREMENTS
All memory requirements are in units of 16-bit word.
FunctionMIPS-Peak LoadingProgram MemoryData MemoryPer-channel Data Memory
Encode12.8687511854622
Decode1.5463711874191
Encode/Decode14.3908111874813

Description

The Adaptive Digital Technologies ADT4800 voice coder software is a real-time implementation of Adaptive Digital’s proprietary 4800 bps speech compression algorithm. This algorithm provides good speech quality at a low bit rate. This software runs on the Texas Instruments (TI) TMS320C5000 family of Digital Signal Processors (DSPs).

Function API's

API function call summary

ADT4800_ADT_InitializeDecode (. . .)      Initializes the ADT4800 decoder software 
ADT4800_ADT_InitializeEncode (. . .)      Initializes the ADT4800 encoder software
ADT4800_ADT_Encode(. . .)           Executes the ADT4800 encoder
ADT4800_ADT_Decode(. . .)           Executes the ADT4800 decoder
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