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What is Fast Inverse Square Root in Python about?

This document describes an algorithm for performing a radix-2 decimation-in-frequency (DIF) fast Fourier transform (FFT). It takes an input array, pads it with zeros if needed to reach the next power of 2 in size, then performs the FFT by doing a series of butterfly operations across multiple stages, with each stage using a different complex multiplier. It finally performs bit reversal to return the output in normal order.

Author

Delia Ines

Language

EN