摘要
G.729是国际电信联盟(ITU)于1996年推出的语音压缩标准,G.729A是ITU最新推出的语音编码标准G.729的简化版本。根据TMS320C5410的特点,提出了采用G.729A语音编解码算法设计的语音压缩系统。给出了系统的硬件结构,包括手动复位电路、晶振电路、电源电路的设计,以及CPLD在DSP系统中的控制分析。此外,还给出软件编程,以及定点优化时的一些原则和方法。
G.729A is a standard of speech coding produced by the international telecom union （ITU） in 1996. G.729A is the new speech coding standard, which is the simplified edition of G.729. Based on the architecture of TMS320C5410, this paper designs a speech coding system using G. 729A decode algorithm. The hardware structure is given, which includes the design of detailed manual reset circuit system, crystal oscillation circuit, power circuit, and the control of CPLD in DSP data acquisition system. Moreover, the paper gives out software programming and some princeples and ways on how to implement it in the fixed point program.
出处
《信息技术》
2008年第2期109-112,117,共5页
Information Technology
