And an FFT explanation by Reducible - https://www.youtube.com/watch?v=h7apO7q16V0 https://www.youtube.com/watch?v=h7apO7q16V0 It's in a similar style to 3blue1

And an FFT explanation by Reducible - https://www.youtube.com/watch?v=h7apO7q16V0 https://www.youtube.com/watch?v=h7apO7q16V0 It's in a similar style to 3blue1brown (uses the same visualisation library) but the video focuses specifically on the FFT algorithm, not on Fourier transforms in general. I'm pretty sure Grant himself recommended the Reducible video at some point.