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Implementation of ITU-T G.723.1 speech codec on TMS320C50

Zhongyuan Wang

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Abstract

Digital signal processor is widely used in speech coding and decoding process.This paper after introduced TMS320C50 fixed point DSP chip and the algorithm of ITU-T G.723.1 briefly,addressed the implementation of G.723.1 codec on TMS320C50.Some key design techniques,such as memory allocation,algorithm optimization and calculation precision processing were presented in detail.The realized codec not only can pass all the ITU-TG.723.1 standard test sequences,but also performs high running efficiency with reasonable memory management.

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What this paper is about

Digital signal processor is widely used in speech coding and decoding process.This paper after introduced TMS320C50 fixed point DSP chip and the algorithm of ITU-T G.723.1 briefly,addressed the implementation of G.723.1 codec on TMS320C50.Some key design techniques,such as memory allocation,algorithm optimization and calculation precision processing were presented in detail.The realized codec not only can pass all the ITU-TG.723.1 standard test sequences,but also performs high running efficiency with reasonable memory management.

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Available abstract

Digital signal processor is widely used in speech coding and decoding process.This paper after introduced TMS320C50 fixed point DSP chip and the algorithm of ITU-T G.723.1 briefly,addressed the implementation of G.723.1 codec on TMS320C50.Some key design techniques,such as memory allocation,algorithm optimization and calculation precision processing were presented in detail.The realized codec not only can pass all the ITU-TG.723.1 standard test sequences,but also performs high running efficiency with reasonable memory management.

Key concepts: Computer science, Codec, Adaptive Multi-Rate audio codec, Digital signal processing, Speech coding, Coding (social sciences), Key (lock), Computer hardware

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