中文说明：应用背景关键技术预处理-删除不必要的噪音和提高信号质量短期能源-定义在信号能量的突然变化过零率-定义-多少次给定的语音信号的零交叉
English Description：
Application backgroundIdentifying the gender classification in speech signal. first preprocessing step to be used in this preprocessing contain windowing, frame blocking, preempasis to reduce the signal noise and improve the siganl quality. here two features that is short terrm enerrgy, zero crossing rate are use to identify the gender of the speechKey Technology preprocessing- to remove the unwanted noise and improve the siganl quality short term energy - defines the sudden changes in the siganl energy level zero crossing rate- define - how many times the given speech signal cross the zer