[sdiy] analogue physical modelling organ dream

[anthony]

>I have approx. fifty  512-stage BBDs, so I could build 4 octaves of a fully
> polyphonic

Are you still using the same setup that's on your page?

> instrument. This _must_ work with one BBD per note.
> The simple nonlinearity I've tried so far, doesn't give good results,
> though.

I think it sounds kind of cool, kind of a creepy and psychotic flute.

> I think of using a Serge-style wavefolder for the nonlinearity now.
> At the moment, I just start to test the concept with a monophonic
> instrument.

I'm using a Radio-Shack "reverb" for my test-bed (opened up with a small 
solderless breadboard on it).
It's a MN3207 thing, but it's handy for trying different weird things. The 
effect I get from putting too much gain in the feedback loop is pretty 
non-linear (I put a big pot there). I like the tone it gives - kind of like 
an E-string dropped to D. But the pitch it gives can be unstable and if you 
shift up and then down there is some hysteresis. Are these the kinds of 
problems you're talking about?

aa