语音是人类语一言的声学表现，是人类交流信息最自然、最方便、最有效的手段。语音信号作为语言的载体，在不同的层面包含了很多信息。其中两个最重要的信息就是与语义相关的内容信息和说话人信息，其他的还有环境信息和传输介质等-Voice is the human language of the acoustic performance of a word is the most natural of human information exchange, the most convenient and most effective means. Speech signal as the carrier of language in different dimensions of a lot of information. Two of the most important information is related with the semantic content of information and speaker information, and other environmental information and the transmission medium, such as