combine single channel scalogram into one multi channel scalogram

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Haleema Ahsan 2020-2-27

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https://ww2.mathworks.cn/matlabcentral/answers/507829-combine-single-channel-scalogram-into-one-multi-channel-scalogram

评论： Karen Rijnders 2020-6-14

i have write following code to create scalograms for 32 channels now i want to combine those 32 scalograms in a single scalogram/image please someone help me how to do this

Fs = 128;
fb = cwtfilterbank('SignalLength',7680,...
    'SamplingFrequency',Fs,...
     'VoicesPerOctave',48);
num=32;
for k=1:num
sig = data(k,1:7680);
[cfs,frq] = wt(fb,sig);
t = (0:7679)/Fs;
figure;pcolor(t,frq,abs(cfs))
set(gca,'yscale','linear');shading interp;axis tight;
title('Scalogram');xlabel('Time (s)');ylabel('Frequency (Hz)')
end

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Karen Rijnders 2020-6-14

Maybe this is helpfull: https://www.mathworks.com/matlabcentral/answers/488542-how-can-i-combine-complex-spectrogram-results-as-an-image-for-multi-channel-eeg-signal

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