基于DSP的G.729语音编解码器的实时实现  

Real-time Implementation of G.729 Speech Coder Based on DSP

作　　者：俞晓峰[1] 诸志龙[1] 许钢[1] 

机构地区：[1]安徽工程科技学院安徽省电气传动与控制重点实验室,安徽芜湖241000

出　　处：《安徽工程科技学院学报（自然科学版）》2008年第3期29-32,共4页Journal of Anhui University of Technology and Science

基　　金：安徽工程科技学院教研基金资助项目(2007yjy32)

摘　　要：随着信息技术的发展,需要在有限的带宽下传送更多的数据,数据压缩技术日趋重要.国际电信联盟(ITU)推出的G.729协议是基于共扼结构——代数码激励线性预测的语音编解码算法.提出了基于TMS320VC5402的硬件实现方案,设计与实现了G.729语音采集与处理系统,并针对算法进行了软件优化,优化后的算法复杂度为48.5MIPS,达到了在目标系统上实时实现的目标.With the development of information technology the technology of data compression becomes more important because more data needs to be transmitted with limited bandwidth. G. 729 protocol proposed by ITU is a kind of speech compression coding technology based on Conjugate Structure Algebraic Code Excited Linear Prediction algorithm. This paper introduces the principle of the G. 729 coder algorithm. Then a hardware design based on TMS320VC5402 is discussed to implement the system of G. 729 speech acquisition and processing. The optimization solution of the software design is given in order to realize the algorithm at realtime. The optimized algorithm consumes 48.5 MIPS and the result is satisying.

关 键 词：G.729 DSP 语音压缩 实时实现 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]