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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。
Firstly, we introduce several main methods of voice frame deletion control (FEC, retransmission, crossover, concealment), and then describe the G.729 Frame ErasureConcealment method in CELP speech coding algorithm in detail and based on it , Proposed a new improved method. Simulation tests show that the new method of frame deletion concealment is better than the standard method.