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G.723.1A
G.723.1A is the implementation of the ITU G.723.1 standard.
It uses Multi-Pulse Maximum Likelihood Quantization (MP-MLQ) and Algebraic Code
Excited Linear Prediction (ACELP) speech coding for coding at 6.3 kbps and 5.3
kbps respectively. The coder operates on 30 msec frames of speech sampled at an
8 kHz rate, which together with a 7.5 msec look-ahead results in a total algorithmic
delay of 37.5 msec.
Technical Specification
- Supports bit rates 6.3 kbps and 5.3 kbps at 8 khz sample rate
- Voice Activity Detection / Comfort Noise Generation (VAD / CNG)
- C callable API for initialization, encoding and decoding of speech
data
- Supports Multi-channel capability
- Optimized implementation
- Bit Compliant with ITU-T test vectors
Applications
- Voice over Internet (VoIP) applications
- Videoconferencing (H.323)
- Multimedia services at low bitrate
Platforms
- Currently supported on TI C64x™ (TMS320C64xx™)and TI C64x+™/DaVinci™ (DM644x™)
- For further details contact mkt@ittiam.com
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For a demonstration of G.723.1A capabilities contact mkt@ittiam.com
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