One of my seminal purchases of electronic music in the 1990s was Surfing On Sine Waves by Polygon Window. Checksum uses a chorus of bandpass filters to subtly modulate white noise. This has some of the character of the sound of surf, “Surfing On White Noise.”
The sounds that’s like a chorus of randomly pitched cymbals is another shortwave radio sample that just turned out that way. For me it reminds me of a Fisher Price Xylophone, the one you can pull across the floor, and it plays a repeating series of notes.
There’s a big bloom of noise in the middle which is the delay effect, which has been wired to model Alvin Lucier “I Am Sitting in a Room” tape feedback. It records the output of a reverb, then plays it back into the reverb, progressively stacking feedback of the ‘room’ sound. This gets quite blown out & noisy before I bring back the ‘live’ synth sounds.