SV: Re: SV: Re: [sdiy] Nonlinearities in IR3109 filters

[Jeff Farr]

> Actually it's the VCA. And no, I'm not even kidding. In Taurus mk1 getting
> the filter and VCA drive levels right is the key to the sound. I assume
> this holds for Minimoog too as the VCA / output circuit has 3 differential
> pairs in series.


Thank you Antti!  Glad to see someone else who recognizes the
importance of factoring in the VCA stage in capturing the quality of
an analog synth!  Of course I have not done the kind of analysis you
have, I've just worked by ear with the various synths and modules I've
had, and once I got over the initial dogma about black magic in the
filters and mysterious nonlinearities I started to recognize that the
VCA really did color the sound and effect the dynamics quite a bit!

I would even suggest that this is true of *most* synths, and it's one
of the critical missing links in current modeling approaches.