spectrogram comparisons

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Matt
Matt on 22 Feb 2012
I'm wanting to run a couple of spectrograms for analysis: one of raw sound and one of filtered sound. When I do this, the intensity of the spectrograms is different for each one because the filtered sound now has a smaller range of frequencies, therefore a smaller intensity field. Is there any way to equalize the intensity of spectrograms so that when I colormap them they are at least closer in color than they are now, without just opening a colormap editor? For example, the raw sound on the default colormap is mostly yellow, with a small red bar at the bottom. When I filter that sound for the frequencies I want, now the whole spectrogram is mostly red with a darker red bar at the bottom. Is there an easy way to adjust these intensities so that they match a little bit closer?

Accepted Answer

nanren888
nanren888 on 23 Feb 2012
Perhaps the default colour scaling is set by the maximum value found. It might be as simple as scaling by that?
I guess that if the peak to average ratio of the two is wildly different, the plots may still look quite different.

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