www.gusucode.com > wavelet 源码程序 matlab案例代码 > wavelet/MODWTOfECGSignalExample.m

    %% MODWT Using Default Wavelet 
% Obtain the MODWT of an electrocardiogram (ECG) signal 
% using the default |sym4| wavelet down to the maximum level.

% Copyright 2015 The MathWorks, Inc.

load wecg;
wtecg = modwt(wecg);
%%
% wtecg is 12-by-2048 matrix. The first eleven rows are the wavelet
% coefficients for scales $2^1$ to $2^{11}$. The final row contains the
% scaling coefficients at scale $2^{11}$. Plot the detail (wavelet)
% coefficients for scale $2^3$.
plot(wtecg(3,:))
title('Level 3 Wavelet Coefficients')