语音压缩编码技术研究进展

The research progress in speech compression coding technology

摘要: 为了满足数字通信及其它商业应用的需求,语音压缩编码技术得到了迅速发展。介绍了目前语音压缩编码技术的研究进展,主要包括连续可变斜率增量调制(CVSD)、小波分析、多脉冲激励线性预测编码、散布脉冲码激励线性预测(DP-CELP)、多重脉冲散布非均匀代数码本激励线性预测(MPD-USACELP)、波形内插(WI)、线谱对(频率)(LSP)的量化。对以上算法进行了分析比较,总结了它们的特点和适用范围,并介绍了其中一些算法在DSP上的实时实现。

Abstract: In order to satisfy demands of the digital communication and other commercial applications,the speech compression technology has been developed rapidly.The present research progress in speech compression technology is introduced in this paper including CVSD,wavelet analysis and its application to speech coding,MPLPC,DP-CELP,MPD-USACELP,WI and quantification of LSF.These algorithms are analyzed and compared.Their characteristics and applicable scopes are summarized.Some algorithms applied to DSP are also introduced.