filttest.m

matlab仿真通过的降噪程序

clear all;
[y1,fs,bits]=wavread('E:\noise enhancing\wav\5.wav');
y1=y1/max(abs(y1));%归一化
figure(1);
plot(y1);

window=chebwin(35,80);
b=fir1(34,0.015,'high',window);
yfilt=filter(b,1,y1);
figure(2);
plot(yfilt);
wavwrite(yfilt,8000,8,'E:\noise enhancing\wav\yfilt.wav');%0db带噪信号