I’d like to talk about the Fold unit introduced in firmware 0.2.5.
I’ve taken a few swings at trying to figure it out but I’m missing something, I think.
I have two other wave folders in my case. There is an analog wave folder on the Intellijel Shapeshifter, and there is a digital wave folder algorithm on the Disting. They both behave fairly similarly when fed a sine or triangle wave and the single [gain] knob is turned up. An example of how they both behave is in the first part of the Disting video for this algorithm found here.
The Fold unit on the ER-301 doesn’t really behave in quite the same way. I can get it to fold once, if I adjust the parameters just so. But the other wave folders in my case continue folding the wave form on itself multiple times as the gain increases. I assume this is because @odevices has provided us with a more fundamental/discrete fold unit for maximum flexibility (e.g. to roll our own wave folder), whereas a dedicated wave folder module might have multiple fold stages and/or other design elements - i.e. design choices made for the user.
I’m thinking that an ER-301 patch could be built that would mimic the behavior of these other wave folders, perhaps by staging more than one fold unit, staging some gain blocks, modulating one of fold unit parameters, self feedback, etc. And then perhaps the behavior could be modified to do something completely different.
At least that’s one approach for how I learn things - model something known and then start tinkering. But I can’t really quite get to step A - mimic some existing wave folder behavior. I guess I don’t know enough about them.
So, anyone have any clues, insights, links?
I think the Upper and Lower are both gains. I’m not really sure what Threshold is doing…