中文说明：在语音信号处理中常用的特征，包括过零率，短时能量，mfcc等，主要用在语音信号识别和分类的特征提取环节，十分好用
English Description：
In speech signal processing commonly used features, including zero crossing rate, short-time energy, MFCC and so on, mainly used in speech signal recognition and classification of the feature extraction process, very easy to use