www.gusucode.com > wavelet 源码程序 matlab案例代码 > wavelet/FiltersforDoubleDensityWaveletTransformExample.m
%% Filters for Double-Density Wavelet Transform % Obtain valid filters for the double-density wavelet transform. %% % Load the noisy Doppler signal. Obtain the filters for the double-density % wavelet transform. The double-density wavelet transform uses the same % filters at all stages. Demonstrate perfect reconstruction using the % double-density wavelet transform. df = dtfilters('filters1'); load noisdopp; dt = dddtree('ddt',noisdopp,5,df,df); xrec = idddtree(dt); max(abs(noisdopp-xrec))