%基于小波變換的心電信號(hào)的壓縮
ecg=fopen('ECG1.dat','r');
N=1201;
data=fread(ecg,N,'int16');
data=data/10000;
fclose(ecg);
x=data;
wavename='db3';
level=4;
[xd,cxd,lxd]=wden(x,'heursure','s','mln',level,wavename);
t=0:0.004:4.8;
subplot(311);
plot(t,x);
title('從人體采集的原始的ECG信號(hào)');
subplot(312);
plot(t,xd);
title('heursure規(guī)則閾值壓縮后的ECG信號(hào)(db3 level=4)');