在TMS320C6x系列DSP上实现G．729算法

在研究ITU-T的G．729CS-ACELP语音编码算法基础上，本文介绍了使用TI公司的TMS320C6x系列DSP实现该算法的一些问题以及一些应用中的具体优化技术，这在一定程度上降低了该算法的计算复杂度，而输出语音仍然保持了很高的合成品质。然后，本文讨论了如何在一个电信级 的应用内核上对该语音编码算法进行多声道扩展的问题，该多通道编码系统基本能达到实用要求。最后，在实时MCPS、内存要求、处理延时和实时性能等方面对该DSP实现的编码器做了一个评价，可以作为其他语音编码器开发的参考。

Efficient Implementation of the G.729 Algorithm Using TMS320C6x DSPs

Based on studying the G.729 speech coding algorithm, this paper describes the details of the ITU-T G.729 speech coder implementation using Texas Instruments' high-performance programmable TMS320C6x DSP family and the various techniques used in optimization. It can considerably reduce the calculation burden and the out speech still keeps a high reconstructed quality. This paper presents the simple techniques to extend the coder for multiple channels using a telecom application specific kernel, the multiple channel coding system can basically reach the demand of the application. Finally we give an evaluation of the real-time MCPS, memory requirements, processing delays and associate trade-offs of the coder using this DSP, and it is helpful for constructing other speech coders.