pure-py-fft
Pure python fft
I couldn't find this code in Nayuki Minase's github repositories (https://github.com/nayuki), so I decided to just put it up here to make it easier for others to find.
Huge thanks to her for writing this!
PS: You can do an inverse FFT using the plain FFT using the tricks described here: https://www.dsprelated.com/showarticle/800.php - "Four Ways to Compute an Inverse FFT Using the Forward FFT Algorithm"
Also worth watching: https://youtu.be/h7apO7q16V0?t=1596