Multimedia SoC Technology

   
  ASTRI TI TMS320C55 ITU-T G.729A+B Codec
   
 

Processor
Texas Instruments TMS320C55 DSP range

Background
ASTRI implementation of the ITU-T G.729A+B codec includes G.729A with the additional option of Annex B. Annex B implements silence compression techniques to reduce the overall transmitted bitrate. G.729B enables voice communication systems providing discontinuous transmission (DTX) and this is achieved based on Voice Activity Detection (VAD) algorithms and Comfort Noise Generator (CNG) algorithms.

Standard Features
• Full ITU-T G.729A+B standard conformance implementation
• Supported sampling frequencies (Hz): 8K
   
ASTRI Specific Features
• Provides API for streaming application through HPI
• Provides API to switch between G.729A and G.729A+B on-the-fly
• OS compatibility: TI DSP/BIOS, Non-OS, Code Composer
 
Performance
G.729A+B Processing Loading
(MIPS) 		Program Memory
(Kbytes)		 Data Memory
(Kbytes)
Encoder
14.4
16.4
12.7
Decoder
3.2
6.9
7.9
Encoder + Decoder
17.6
22.7
13.5
 

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