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Implementation of ITU-T G.729 Speech Codec in IP Telephony Gateway
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作者 HUANG Yong feng,ZHANG Jiang ling National Storage System Lab, School of Computer, Huazhong University of Science & Technology, Wuhan 430074,China 《Wuhan University Journal of Natural Sciences》 CAS 2000年第2期159-163,共5页
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 o... 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. 展开更多
关键词 Key words ITU T G. 729 ip telephony gateway speech codec
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