语音信号的倒谱分析，语音采样频率44000hz，取20ms一帧语音，样点数880个，起始序号40000，加汉明窗，求倒谱图-Cepstrum analysis of the speech signal, voice sampling frequency 44000hz, take 20ms one voice, the number of samples 880, starting serial number 40000, Jia Hanming window, inverted spectru