clear all;clc;close all;
Sam_rate=128;%采样率
% Au=wavread('C:\Users\user\Desktop\drop.wav');
% len32=round(11.6/1000*32*Sam_rate*1024);
% len1=round(11.6/1000*Sam_rate*1024);
% Win_hann=hanning(len32);
% f1=Au(1:len32,1);
% Af1=f1.*Win_hann;
% plot(Af1,'r');hold on;plot(f1)
% F_f1=fft(f1);
% F_Af1=fft(Af1);
% F_hann=fft(Win_hann);
1