基于DSP的G.729语音编解码器设计

摘要

An optimized ITU-T G. 729 speech codec based on DSP is designed. The algorithm and code adopted in the source code which overcame the low efficiency and long executive time on a DSP. The optimizcd algorithm provided a high quality of the speech output and improved the code executive efficiency, realized the real-time processing of the speech signal.The codec system performance is tested and the result satisfies the design requirements.%设计了基于DSP的G.729语音编解码器,并针对G.729算法标准源码代码效率低、执行时间长的不足,从算法精简、代码优化等方面进行了优化.优化后的算法在保证了高质量语音输出的同时,提高了编码效率,实现了对语音信号的实时处理.最后对系统性能进行了测试,结果满足设计要求.