How to modify spectrograms so that there is no effect of amplitude on their classification?

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Is there any way to bring different classes of spectrograms to comparable amplitude levels so that when they are used for classification, the deep learning algorithm focuses on other aspects (like the presence or absence of harmonics)?
Thanks in advance.

Accepted Answer

Image Analyst
Image Analyst on 9 May 2022
If you want, you can try rescale

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