对语音编码技术的特点进行了分析与研究， 对波形编码、声码器与混合编码三种主要的语音编码进行了比较， 并介绍了GSM 与CDMA 两种系统语音编码及部分分常用语音编码芯片， 指出了语音编码技术的发展趋势，， 并根据矿井井下特点， 对矿井通信系统所使用的语音编码技术进行了研究， 最后的出了几点有用的结论.

-Analysis and research on the characteristics of the speech coding technology, waveform coding, vocoder, and hybrid coding three main types of speech coding, and introduced the GSM and CDMA both systems, speech coding and a part of common speech coding chip pointed out that the speech coding technology development trend, and according to the characteristics of the underground mine, the mine communication system used in speech coding technology research, the last several useful conclusions.