The vibrating round thing. The "Whelmer". It's these randomly generated moving fuzzy rings. Moving in or out. Intersecting.
The sound isn't so much gotten from a sampling of the visuals as a sampling of the same data that the visuals also sample. That data being a big array of integers, basically.
To see it properly you really should download a high-quality video and watch it projected big (like 6' tall) with good speakers.
Here's a nice one : https://www.dropbox.com/s/6t9skr0ua4le5ma/whelmer46a_5m.mkv?...
Generative art != glitch art, but these might be of interest to some people as well, since there was thread about a week ago on PNG glitching, and I went down a rabbithole saving links.
https://news.ycombinator.com/item?id=19075003
http://www.glitchet.com/resources
https://www.vice.com/en_us/article/mgpv3a/heres-what-happens...
java has a nice low level audio generation tech where you just make a big integer array.
I take a radial sample of this field of cells, convert it to audo.... ok, there is no science going on here. I just fucked with the code until it sounded good. Several magic numbers involved. See my github at fleen.org/generative-art for the actual code. The sound generation is only a few dozen lines.
I used to make stuff like this with processing + arduino for inputs, with some fun results that are sadly lost to time.