Fw: 3080 VCA question

[jhaible]

----- Original Message -----
From: jhaible <jhaible at debitel.net>
To: Martin Czech <martin.czech at intermetall.de>; <msynth-diy at mailhost.bpa.nl>
Sent: Thursday, January 13, 2000 12:15 PM
Subject: Re: 3080 VCA question


> > :::I always thought the Formant dual VCA a stupid solution as well.
> > :::Maybe it is, maybe it isn't. I never tried the Formant dual VCA,
> > :::but there is another dual VCA made from cascaded variable
> > :::gm stages that sounds marvelous: The Minimoog VCA.
> >
> > In what respect does the cascaded VCA structure do anything good for
> sound?
> > Is it distortion?
> >
> > m.c.
>
> That's what I *think* it is, the combines "rounding" of the signal from
two
> cascaded stages. Which needs a special level matching between the 1st and
> second stage, of course.
> Haven't checked this for the Formant circuit. When I built a
> Formant-inspired
> synth long ago (my JH-1), I used a single exponential VCA.
> Today I'd do it exactly as you described: One VCA with both lin and expo
> CV inputs. For a general purpose VCA, that is. For a dedicated audio VCA
> in a fixed architecture synth (VCA after VCF) you cannot beat the
> "musicality"
> of the Minimoog VCA scheme, IMO.
>
> JH.
>
>