www.gusucode.com > wavelet 源码程序 matlab案例代码 > wavelet/InverseMODWTWithSpecifiedWaveletExample.m
%% Inverse MODWT with Specified Wavelet % Obtain the MODWT of Deutsche Mark-U.S. Dollar exchange rate data and % demonstrate perfect reconstruction. %% %% % Load the Deutsche Mark-U.S. Dollar exchange rate data. % Copyright 2015 The MathWorks, Inc. load DM_USD; %% % Obtain the MODWT and the Inverse MODWT using the |'db2'| wavelet. wdm = modwt(DM_USD,'db2'); xrec = imodwt(wdm,'db2'); %% % 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 $10^{-13}$, which demonstrates perfect reconstruction. norm(abs(xrec'-DM_USD),Inf)