ACELP算法在PC上实时播放的实现

Real-time broadcasting of PC with ACELP algorithm

对TETRA系统中所采用的ACELP(Algebraic CELP)语音压缩算法进行了分析,该算法是基于CELP的改进算法,在语音编码中具有较强的代表性。在Windows XP环境下,利用VS2005实现将声卡采集到的数据进行压缩和解压缩,延时10s后通过声卡播放出来。实现过程用到许多Windows核心程序开发知识,并且给出了关键部分的源代码。对语音编码研究人员和程序员都有一定的借鉴意义。

The ACELP （Algebraic CELP） algorithm used in the TETRA system is studied, which is a typical speech coding algorithm based on the improved CELP algorithm. In order to test the practical effect of this algorithm, the VS2005 is used to carry out the compression and decompression of the data acquired by sound card and play it back after 10s in the Windows XP environment. The whole process uses lots of the core Windows development knowledge and gives out the key part of the source code. This could be useful for speech coding researchers and programmers.