Whenever I run sine beeps through a home-made spectrum visualizer, and I use the square window or the Tukey window, I get these weird-looking vortices...
They stay the same size and shape regardless of FFT size, but they get bigger with bigger window overlap.
It might be a bug because I don't see it in other software. But it's pretty
@windytan I also noticed the same pattern before. Still couldn't figure out the theoretical reason behind it, but I recognize the pattern kind of resembles an aliased sine wave
sin(x^2 + y^2)
x,y integers.
that I played a bit with before:
https://krasjet.com/eidos/cinoma/
The input audio in this case is a feedback loop constructed with two mic/spk pairs.
windytan
kst