cwtfilterbank magnitude linear scale

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I am using the cwtfilterbank function to generate a scalogram from a signal. However, the frequencies on the Y-axis of the scalogram are not linear. I have read the documentation for cwtfilterbank, but I couldn't find a direct solution. What changes can I make to achieve a linear frequency scale on the scalogram?
fb = cwtfilterbank('SignalLength',signalLength,'Wavelet','amor','SamplingFrequency',Fs,'VoicesPerOctave',48, 'FrequencyLimits', [0 40])
[wt,f] = fb.wt(sig);
im = ind2rgb(im2uint8(rescale(abs(wt))),jet(256));

回答(1 个)

Binaya
Binaya 2024-8-21
编辑:Binaya 2024-8-21
Hello Jhon
The "cwt" command plots a scalogram with filterbank and signal as input. Here, the frequency scale is plotted in log scale to represent the frequency components present in the filterbank generated by "cwtfilterbank".

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