语音信号课程设计 语谱图程序 [x]=wavread('E:\lyf.wav'); sampling_rate = 44100; % sampling rate lfft = 1024; % FFT length lfft2 = lfft/2; winlgh = 1024; % 窗长 frmlgh = 100; % 帧移 noverlap = winlgh - frmlgh; x = 2.0*x/max(abs(x)); etime = length(x)/sampling_rate;%真实的时间 spec = abs(specgram(x, lfft, sampling_ra