Aspects

Pyfftw

A python wrapper for FFTW, a fast-fourier transform library.

Scipy

SciPy is an open source library of algorithms and mathematical tools for the Python programming language.

Others

Quality | Example |
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Better job |
"Edit more recent scipy does a better job of not always padding to powers of 2 length so is closer in output to the pyfftw case" from question "Convolution of two three dimensional arrays with padding on one side too slow" |