基于TMS320VC5509的G.729A算法实现  

Implementation of G.729A algorithm based on TMS320VC5509

作　　者：管必聪[1] 吕虹[1] 

机构地区：[1]安徽工程科技学院电气工程系,安徽芜湖24100

出　　处：《机电工程》2008年第2期50-52,共3页Journal of Mechanical & Electrical Engineering

摘　　要：国际电信联盟(ITU-T)于1996年提出了G.729A8 kbps语音编码标准。通过分析该标准的核心算法CS-ACELP的算法原理,根据数字信号处理器的特点,将ITU给出的标准C代码移植到TMS320CV5509 DSP上并对源代码中运算量较大的模块进行了代码优化,实时实现了G.729A低速率语音编解码器。经过测试,结果表明合成语音具有较高的自然度和可懂度。The ITU-T organization standardized the G. 729A for 8 kbps speech coding in 1996. Firstly, the core algorithm principle of the standard, conjugate-structure algebraic-code-excited linear-prediction （CS-ACELP） was analyzed. According to the characteristics of the digital signal processor, the standard C code given by the ITU were transplanted into the DSP TMS320VC5509 and the larger operational quantity modules of the source code were optimized. Finally, the G. 729A low-rate speech codec were implemented real-time. After the test, the results show that the synthesized speech has better naturalness and intelligibility.

关 键 词：语音编码 数字信号处理器 G.729A 共轭结构算术码本激励线性预测 

分 类 号：TN912.3[电子电信—通信与信息系统]