Caustic Song file (optional):
What's that then? It's a cross between a Sample and Hold unit and a Delay. They have multi steps, a little bit like an analog sequencer, and are commonly used to process 'Note CV'. With one (or more) oscillator per step. Two steps are useful. Three start to get interesting. I've managed to get three steps out of one Modsynth (A), and four out of a combination of two (B).
If you press 'play', you'll hear this, rhythmically disjointed, pattern. And, as you'd expect, the first trigger has the lowest pitch. If you scroll up to machine 'A', you'll see a 3>1 mixer, in the top row, with input 1 turned up. This is the first step. Turn that down, and turn up input 2 (step 2). You'll hear the same pitches. But, if you look at the pattern, you'll see (and hear) that the lowest pitch is now on the second trigger. Note CV has shifted along by one trigger. If you turn down input 2, and turn up input 3, (step 3. See where we're going here?) then you'll hear that lowest pitch shifted along to the third trigger.
If you mix all three inputs, the result is a cascading, kind of, 'song in the round' effect.
This is not the prettiest of patterns. A similar effect can be set up by, just, running 'Note CV' through a series of delays. But the notes would have to be evenly spaced and correspond with delay times. With ASRs, that's optional. You trigger them (within reason) when you want to. So, if you move those notes around in the time line, it won't stop working.
If you delete one of those notes, then the number of different pitches will correspond to the number of steps, and the whole thing will settle down to play a triad in a pseudo polyphonic kind of way.
And that's about it. In 'A', I'm using three Waveform Generators with identical settings. Feel free to change any of that. I insist.
In setup 'B', the first step is in 'B1' (the WG on the right) and there are three more steps in 'B2'. The output of B2 is fed into B1 for filtering and Volume envelope.
Mod fans may well spot the employment of the Modsynth's, built in, DC signal generator.