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

    %% Perfect Reconstruction Using Dual-Tree Double-Density Wavelet Filter Bank  
% Demonstrate perfect reconstruction of a signal using a dual-tree 
% double-density wavelet transform.   

%% 
% Load the noisy Doppler signal. Obtain the dual-tree double-density wavelet
% transform down to level 5. Invert the transform and demonstrate perfect
% reconstruction. 
load noisdopp;
wt = dddtree('cplxdddt',noisdopp,5,'FSdoubledualfilt',...
     'doubledualfilt');
xrec = idddtree(wt);
max(abs(noisdopp-xrec))