摘要
以TMS320C6203为硬件平台,设计了高速G.729ab多通道声码器。使用纯汇编指令与C语言结合优化编程提高核心编解码算法效率,实时支持最大31个话路语音的G.729ab编解码。利用TMS320C6203的在片外设McBSP提供声码器连接PSTN的标准E1接口,设计了用于分组数据收发的RTP协议接口,利用TMS320C6203的HPI接口方式与上层处理器连接,使得声码器可灵活地应用于媒体网关。
A high speed multi-channel G.729ab codec was designed on TMS320C6203 hardware platform.The pure assemble instruction combined with C language are used to improve the effectiveness of codec algorithm,31G.729ab channels are supplied realtimely.The multi-channel buffered serial port（McBSP） of C6203 is disposed as E1interface to PSTN.The host processor interface of C6203 was designed to provide a real-time protocol connection.This codec can be used in media gateway conveniently.
出处
《现代电子技术》
2010年第15期104-106,共3页
Modern Electronics Technique
基金
陕西省自然科学基金资助项目(2009JM8015)
陕西省教育厅专项科研计划资助项目(09JK730)
