denosie2.m

小波去噪的两个程序,大家可以参考一下.若有什么不好,共同讨论

function x2=denosie2(x)
%clc
%clear
%close all

%snr=3 ;
%init=126424 ;
%[x ,xn] =wnoise(2 ,10 ,snr ,init) ;
plot(x)
hold on
title('原始信号')
axis square
%figure ,plot (xn)
%title('含噪信号')
%axis square

lev=5;
%[thr,sorh,keepapp]=ddencmp('den','wv',8);
xd = wdencmp('gbl',x,'db1',lev,0.28,'s',0);
figure
plot(xd),hold on
title('软阈值去噪信号')
axis square
x2=xd;

%lev2 = 10;
%xd2 = wden(x,'sqtwolog','h','sln',lev2,'sym4');
%figure ,plot (xd2)
%title ('硬阈值去噪信号')
%axis square