What are some ways in Python to adaptively normalize a signal?

Question

Python

Greetings! Imagine that there is such a signal:

And I want to find the minima and maxima of the peaks (marked in red), and then find the frequency of these upper and lower peaks. Thinking about the Fourier transform. Tell me what to study? What to read?
So far, it only came to mind to build an average over the value window and make a subtraction. As a result, I got something like this:

But here it is necessary to adjust the values ​​​​for each signal ...

Calculating signals in real time is not required, and libraries such as talib do not fit with their methods.

Answer 1

https://docs.scipy.org/doc/scipy/reference/signal.html
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