中文说明：chapter2-1 生成三角波并画出频谱图chapter3-1 高频提升程序chapter4-1 语音信号短时频域分析，添加不同窗函数的语谱图chapter5-1 倒谱的matlab实现chapter6-1 levinson-durbin递推法求lpc系数chapter7-1 已知训练序列的LBG算法实现
English Description：
Chapter2-1 generates a triangle wave and draw the spectrum diagram high frequency upgrade program Chapter4-1 Chapter3-1 short-time frequency domain analysis of speech signals, add a different window function of MATLAB realization of spectrogram Chapter5-1 spectrum chapter6-1 Levinson-Durbin chapter7-1 recursive method of LPC coefficients known training sequences of LBG algorithm