matlab环境下实现语音预处理 包括语谱图 倒谱系数 短时频谱的画图-voice pretreatment Matlab environment, including spectrogram drawing of the short-time spectral cepstral coefficients

通过matlab语音，对录制的语音通过计算倒谱实现基音检测。-Through the matlab voice, the recording of the voice through the calculation of cepstrum to achieve pitch detection.

使用LSD，即对数倒谱距离（Log_Spectral_Distance）来评判重构出来信号与原始信号之间的差异。(It uses the Log_Spectral_Distance to judge the difference between the original signal and the restructed signal.)