基于matlab采集语音信号；实现语音预加重、过零检测、分帧等预处理；实现可视化界面设计，完成语音预处理过程显示；-Matlab based speech signal acquisition, voice pre emphasis, zero detection, sub frame, etc. preprocessing visual interface design, complete voice preprocessing process display

本文简要介绍了语音信号采集与分析的发展史以及语音信号的特征、采集与分析方法，并通过PC机录制自己的一段声音，运用Matlab进行仿真分析，最后加入噪声进行滤波处理，比较滤波前后的变化(This paper briefly introduces the history of the development of speech signal acquisition and analysis, the feature of speech signal, the method of collecting