eventually one of the things i want to build & use as part of this project is a "waveform animator". i know there are modules for this from multiple established manufacturers, and i don't know how they work, but i do know they tend to be large and expensive.
my own take on the idea is basically a phaser - i.e. a bunch of all-pass filters, the more the better - but unlike a traditional phaser, sweep the filters at different rates to each other, not all in sync. also give it stereo out, and pan the filters to fill the stereo space nicely.
testing out the theory in software, using multiple instances of ReaEQ and Renoise's automation LFOs to simulate the effect, to see if this is even vaguely worth pursuing. i think it could be.
also, trying to figure out the internal architecture of the KORG Berlin softsynth from the Korg Gadget plugin pack, i accidentally created a kind of weird overtone oscillator by varying LFO speed.
two playthroughs of a simple sequence, first without the effect applied, second with. (both with stereo multitap delay also applied.)