说明：  对语音编码技术的特点进行了分析与研究, 对波形编码、声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CDMA 两种系统语音编码及部分常用语音编码芯 片, 指出了语音编码技术的发展趋势, 并根据矿井井下特点, 对矿井通信系统所采用的语音 编码技术进行了研究, 最后得出了几点有用的结论.
(Of speech coding technology characteristics of the analysis and research on waveform coding, vocoder and mixed encoding three major speech coding are compared, and introduced the GSM and CDMA both types of systems commonly used part of speech coding and speech coding chip pointed out that the speech coding technology, development trends, and in accordance with the characteristics of the mine pit of the mine communication system used in speech coding technology for the study came to the conclusion that some useful conclusions.)