matlab信号特征提取程序集合，包括信号的多种经典特征-Signal feature extraction matlab collection procedures, including the classic characteristics of a variety of signals

这提供的MATLAB代码用于提取基本的音频特征。-This provides the MATLAB code used to extract the basic audio features.

一系列的matlab音频处理工具，可以求各项音频指标-A series of matlab audio processing tools, and various audio indicators

A program used for feature extraction in matlab. Can be used for emotion recognition in artificial neural network.

过零率 (zero-crossing rate,ZCR)是指一个信号的符号变化的比率，例如信号从正数变成负数或反向。 这个特征在语音对比、语音识别和音乐信息检索(music information retrieval)领域得到广泛使用。(Zero-crossing rate (ZCR) refers to the rate at which a signal changes sign, for example, the signal changes from positive to negati