G.723.1编解码器在TMS320C50上的优化实现  

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

作　　者：朱荣[1] 胡瑞敏[1] 常军[1] 王中元[1] 

机构地区：[1]武汉大学国家多媒体软件工程技术研究中心,武汉430072

出　　处：《计算机应用研究》2010年第4期1400-1402,共3页Application Research of Computers

摘　　要：数字信号处理器在语音编解码中得到广泛应用。在简要介绍TMS320C50定点DSP芯片和ITU-TG.723.1语音编解码算法后,详细讨论了G.723.1在TMS320C50上的实现及其技术要点,主要是内存安排、算法和代码优化、数据精度等。设计的编解码器通过了ITU-TG.723.1标准测试数据测试,占用内存资源较少,并具备较高的编解码速度。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.

关 键 词：定点DSP 语音编解码 G.723.1 优化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]