STFT_x_MATLAB短时傅里叶变换_模拟水声信号_短时傅里叶_振动程序_

function [XX,YY]=STFT_x(x,Fs) window_len=128; overlap_rate=0.5; % 0.3=30% overlap nfft=4096; window_overlap=fix(window_len*overlap_rate); Nx_STFT = fix((Nx-window_overlap)/(window_len-window_overlap)); [Xf,F,T_delay,X_PSD] = spectrogram(X(t1:t2),window_len,window_overlap,nfft,Fs); %%%% X(t1:t2); X T_time=T_delay+t_time(1); Xf=transpose(Xf); %%% One-side Spectrum ���� X_PSD=transpose(X_PSD); %%% One-side PSD