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研究了现代中低速语音编码体制抗信道误码所采用的典型方法，主要分析了零冗余抗信道误码方法，包括预测器设计、编码器结构改变、语音参数对信道误码敏感程度的影响、信源／信道联合编码、恢复机制和参数量化编码设计等；此外还阐述了用于语音编码体制的前向纠错技术，包括比特选择的前向纠错和信道编码码类的选择等。抗信道误码能力是语音编码体制的一个重要指标，掌握目前典型的抗信道误码方法，对进一步构造具有高鲁棒性（Ｒｏｂｕｓｔｎｅｓ）的语音编码体制具有重要意义。
The typical methods of anti-channel error coding in modern low-speed and medium-speed speech coding systems are studied. The methods of zero-redundancy anti-channel error codes are analyzed, including the design of predictor, the structure of encoder and the influence of voice parameters on the sensitivity of channel error codes , Joint coding of source / channel, restoration mechanism and parameter quantization coding design. In addition, the forward error correction technology for speech coding system is introduced, including the selection of bit error correction and channel coding code. The ability of anti-channel error code is an important index of voice coding system. To master the typical anti-channel error code method is of great significance to construct a speech coding system with high robustness (Robustnes).