[TulliusCicero]

Literally just yesterday I was staring at Winamp's basic visualizer because I was trying to make something similar in my Godot game.

I'm still not sure exactly what I'm missing, as I have the "gist" of the visualizer working, but it just doesn't look as smooth as Winamp's. I think I need slight persistence and the little effect with the 'caps' that slowly fall down for each column (right now mine looks too jittery).

[foxandmouse]

have you looked at the ProjectM: https://github.com/projectM-visualizer/projectm

[ihatehn]

Those might be called peaks or peak indicators: common in audio interfaces to indicate the maximal decibels in each frequency bucket over the last second or so, so that you don't miss seeing a split-second super loud sound.