Hi Dieter,

> I think there are no such strict rules. I personally like the double
> exponential behaviour (i.e. exp. ADSR + exp. VCA) for punchy,
> percussive sounds. On the other hand I very often use a linear VCA
> for LFO based modulations.

as I wrote in my book: "There is no rule how to use a modular system. If
you like the sound of a synth crashing on the boardwalk, then do let you
urge by the owners manual, open the window and throw it out" ;-)

But regarding amplitude modulation by linear voltages (like LFOS) and
linear/exponential VCAs there is a big difference in the sound of audio
crossmods! I'd always use the exponential VCAs for these (principle:
more bang for bucks).

Regarding envelope modulation of VCAs: for live Music (as you do it) the
combination exp. ADSR + exp. VCA is ok and works more like the famous
"icepick in the forehead", but if you want them to use it in a recording
the sound will be mostly _thin_.

Florian