G.729语音编码算法的帧删除隐蔽的改进

Improvement of Frame Erasure Concea lment for G.729 Speech Coding Algorithm

首先介绍了当前几种主要的语音帧删除控制方法(FEC、重传、交叉、隐蔽),然后详细描述了CELP语音编码算法中的G.729帧删除隐蔽(FrameErasureConcealment)方法,并以它为基础,提出了一种新的改进方法。模拟测试表明在帧删除隐蔽方面新的方法比标准方法效果更好。

Some kinds of current frame erasure c ontrol means(FEC,Retransmission,Interleaving,Concealment )are introduced,then G.729frame erasur e concealment of CELP speech coding i s described in detail.We propose an i mproved means based on G.729.Simulation test indicates that the new technique is better than the standard technique u sed in G.729.