www.gusucode.com > wavelet 源码程序 matlab案例代码 > wavelet/DefaultGlobalThresholdforWaveletPacketCompressionExample.m
%% Default Global Threshold for Wavelet Packet Compression % Determine the default global compression threshold for an N(0,1) white % noise input. %% % Create an N(0,1) white noise input. Set the random number generator to % the default initial settings for reproducible results. dwtmode('per'); rng default; x = randn(512,1); %% % Use |ddencmp| with the |'cmp'| and |'wp'| input arguments to return the % default global compression threshold for a wavelet packet transform. [thr,sorh,keepapp,crit] = ddencmp('den','wp',x);