The optimization and real-time implementation of G.729A codec on TMS320C5510

Three layer optimizations in algorithm, DSP programming and compiling respectively for G.729A codec and real-time implementation on TMS320C5510 DSPs is described. A new algorithm is proposed for calculating line spectrum pair parameters with higher accuracy and less executing time consumption. The outstanding solutions of DSP programming and compiling optimizations for real-time implementation are also introduced. The optimal codes with different techniques are implemented and tested on TMS320C5510 DSPs. The test results of the optimal codes with DSP/BIOS programming show that the encoding and decoding are correct, real-time proceeding and computing delay is much smaller than the required minimum delay, the whole performance of G.729A codec is much improved.