多路G.729编解码器的实现及ATM适配研究

Implementation of multi-channel G.729 CODEC and research on ATM adaptive solution

在简要介绍话音压缩编码标准ITU-TG.729建议的基础上,介绍了用TI公司的数字信号处理器TMS320C6202实现其多路程序的方法。提出了一种用AAL2来对G.729低速码流进行ATM适配的方案,方案中,实现了G.729低比特率语音编码和AAL2在支持实时、可变速率、短分组业务应用中的优势的结合,解决了通信网中无线中继存在的传输质量和带宽受限的问题。

The speech compression coding standard ITU-T G.729 is briefly introduced.The software implementation to multi-channel voice code based on TI's digital signal processor TMS320C6202 is presented. A scheme using AAL2 to adapt ATM is put forward to solve the problem of transmission QoS and bandwidth limitation of wireless relay network. It combines the low bit CODEC G.729, the AAL2's advantage of supporting realtime, the VBR and the short packet service.