www.gusucode.com > wavelet 源码程序 matlab案例代码 > wavelet/PerfectReconstructionWithMODWTExample.m
%% Perfect Reconstruction with the Inverse MODWT % Obtain the MODWT of an ECG signal and demonstrate perfect reconstruction. %% % Load the ECG signal data and obtain the MODWT. % Copyright 2015 The MathWorks, Inc. load wecg; %% % Obtain the MODWT and the Inverse MODWT. w = modwt(wecg); xrec = imodwt(w); %% % Use the L-infinity norm to show that the difference between the original % signal and the reconstruction is extremely small. The largest absolute % difference between the original signal and the reconstruction is on % the order of $10^{-12}$, which demonstrates perfect reconstruction. norm(abs(xrec'-wecg),Inf)