Implementation of ITU-T G. 729 speech codec in IP telephony gateway |
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Authors: | Huang Yong-feng Zhang Jiang-ling |
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Institution: | (1) National Storage System Lab, School of Computer, Huazhong University of Science & Technology, 430074 Wuhan, China |
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Abstract: | 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.
Foundation item: Supported by the National Natural Science Foundation of China under grant 69773046
Biography: HUANG Yong-feng (1967-), male, Ph.D candidate, Current research interest is in computer network |
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Keywords: | ITU-T G 729 IP telephony gateway speech codec |
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