该程序的主要计算小波功率谱(wavelet power spectrum) 全球小波谱(global wavelet spectrum)和 scale-average time series (自己利用的时候可能里面的时间需要修改,或者参考以上的程序自己根据自己的需要进行编写)
Plot the magnitude of the wavelet packet power spectrum. Get figure level = 6; wpt = wpdec(sig,level,"sym8"); [spec,tm,frq] = wpspectrum(wpt,Fs,"plot"); Compare with a plot of the magnitude of the STFT of the same signal. Get windowsize = 128; window = hanning(windowsize)...
The goal of this paper is to analyze the main relationships between them by computing, using a special toolbox in MATLAB, the wavelet power spectrum and the cross-wavelet coherency associated with Morlet wavelets, focusing our interest on the period variable. We decompose the time鈥揻requency ...
The wavelet cross-spectrum is a measure of the distribution of power of two signals. The wavelet cross spectrum of two time series,xandy, is: Cx(a,b)andCy(a,b)denote the continuous wavelet transforms ofxandyat scalesaand positionsb. The superscript*is the complex conjugate, andSis a smoot...
Wavelet packet spectrum collapse all in pageSyntax [spec,times,freq] = wpspectrum(wpt,fs) [___] = wpspectrum(wpt,fs,'plot') [___,tinfo] = wpspectrum(___)Description [spec,times,freq] = wpspectrum(wpt,fs) returns a matrix of wavelet packet spectrum estimates, spec, for the binary...
This MATLAB function returns the time-averaged wavelet power spectrum of the signal x using the continuous wavelet transform (CWT) filter bank fb.
“Deep Scattering Spectrum.” IEEE Transactions on Signal Processing 62, no. 16 (August 2014): 4114–28. https://doi.org/10.1109/TSP.2014.2326991. [2] Mallat, Stéphane. “Group Invariant Scattering.” Communications on Pure and Applied Mathematics 65, no. 10 (October 2012): 1331–98. ...
If LogSpectrum is set to true, the log of the multitaper power spectrum is used. Consider setting LogSpectrum to true if using the PeakThresholdPercent segmentation method and there is a dominant peak frequency that is significantly larger in magnitude than other peaks....
CWTs correlate a time series of interest with scaled wavelet functions centred at each subsequent moment in time, detecting time-varying power-spectrum density profiles. At each moment, periodicity of the signal of interest is estimated by finding the scale(s) that maximize the correlation between ...
( power spectrum P/W ); Wavelet decomposition and reconstruction program the clear I = imread ( C: \ Documents and Settings \ Administrator \ desktop \ summer/cidian ); I = rgb2gray (I); [X, the map] = gray2ind (I); Subplot (2, 2, 1); Imshow (X, map); Title ( original ...