[sdiy] Moogey jitter

[JH.]

> >Warm I don't know, but it clearly has some pleasant animation.
> 
> Animation, yes, but not that pleasant to my ear. 

I think it can be useful as it is, in some cases, but it would be nice
if we could turn the effect _down_ a little, or change its character.

>  I'm sure we could do 
> better with FM from an appropriately filtered noise source, or with an 
> appropriate chaotic circuit.

Exactly.

JH.