Fast Fourier Transform Explained | Built In

OpenCV Fast Fourier Transform (FFT) for blur detection in images and video streams - PyImageSearch

Understanding the Discrete Fourier Transform and the FFT

Investigating ARM Cortex® M33 core – DSP Acceleration 3 (PowerQuad FFT Tutorial)

FFT Audio Visualization Video Tutorial

A tutorial on ocean waves simulation with FFT. Links to the video and source code in the comments.