UC知道摘要翻译 先谢了
来源：百度知道 编辑：UC知道 时间：2024/09/21 02:38:33
G.729是国际电信联盟(ITU)于1996年提出了一种共轭结构代数码激励线性预测(CS-ACELP) 的语音编解码算法。该算法在8kb/s码率下具有良好的音质和较短的延迟。G.729A是G.729的简化方案，它主要降低了算法的复杂度，而语音质量并没有明显降低,因此目前使用的都是G.729A。
本课题主要研究将G.729A算法的C语言源代码移植到DSP芯片TMS230VC54016上并实现实时运行的方法。本文将介绍以下内容：简单介绍G.729协议的算法原理，‘VC5416的硬件结构和外围电路；分析PC平台与DSP平台上C语言编程的异同，讨论将PC平台上的C语言源代码移植到DSP平台上的方法；对经过移植和优化的代码的运行效率进行分析，并进行实时验证。
在DSP系统中，经过移植和优化的G.729A算法代码的压缩比达到16：1，运行效率得到较大的提高，完全符合实时处理的要求，解码后还原的语音有很好的主观音质。
In recent years, with digital signal processor (DSP) of computing power continue to increase, on-chip interface resources and more enriched, computing units continue to reduce the power consumption requirements, makes a lot more complicated digital signal processing algorithms in the DSP On the realization of real-time and is widely used. One of the most prominent is the DSP and voice signal compression algorithm of combining the application.
G.729 is the International Telecommunication Union (ITU) in 1996 proposed a conjugate structure generation digital Excited Linear Prediction (CS-ACELP) voice codecs algorithm. The algorithm in the 8 kb / s rate of good quality and shorter delays. G.729A is G.729 simplified programme, which mainly reduce the complexity of the algorithm, and the voice quality has not decreased significantly, are currently used by the G.729A.
The main topic will be G.729A algorithm C language source code to transplant TMS230VC54016 on DSP chips and rea