G.728

ITU-T recommendation G.728 Annex G is the fixed-point version of the coding of speech at 16kbps using Low Delay Code Excited Linear Prediction (LD-CELP). It uses backward adaptation of predictors and gain to achieve an algorithmic delay of 0.625 ms. G.728 Annex I (G.728 I) is the packet loss concealment (PLC) technique used along with G.728 G. G.728 coders are widely used for applications that require very low algorithmic delay.

Technical Specification

• Bit rate of 16 kbps at 8 khz sampling rate
• Packet loss Concealment (Annex I)
• 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 Packet Networks especially Voice over Cable and DSL
• Video conferencing systems

Platforms

• Currently supported on TI C64x™ (TMS320C64xx™)and TI C64x+™/DaVinci™ (DM644x™)
• For further details contact mkt@ittiam.com

For a demonstration of G.728 capabilities contact mkt@ittiam.com