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Apodization mask for fast Fourier transforms in Python

I need to do a Fourier transform of the mapping in Python. Fast Fourier transforms imply periodic boundary conditions, but the input mapping is not periodic. So I need to apply an input filter / weight, slowly narrowing the map to zero at the edges. Are there any libraries for this in python?

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Source: https://habr.com/ru/post/1685644/

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