论文部分内容阅读
ITU T G.729 is the primarily recommended speech codec by H.323 standard. This paper describes how to implement G.729 codec in IP telephony gateway, and goes deep into the programming skills on TMS320C6201 DSP and optimizing methods of program code to reduce the speech processing delay time of G.729 codec. Due to adopting these optimizing methods and programming skills, we have implemented a high speed speech codec that can process concurrently 20 voice channels with single TMS320C6201 chip in IP telephony gateway. Finally, the paper analyzes the performance results of ITU T G.729 codec based on TMS320C6201.
ITU T G.729 is the with recommended speech codec by H.323 standard. This paper describes how to implement G.729 codec in IP telephony gateway, and goes deep into the programming skills on TMS320C6201 DSP and optimizing methods of program code to reduce the speech processing delay time of G.729 codec. Because to have these methods and programming skills, we have implemented a high speed speech codec that can process concurrently 20 voice channels with single TMS320C6201 chip in IP telephony gateway. Finally, the performance results of ITU T G.729 codec based on TMS320C6201.