On Fri, 8 Apr 2005, Adam Schabtach wrote:
> Uh, if there's a known solution to an issue with MOTM modules that has come
> up several times in discussion on this list, isn't it worth describing here?
> I'm still somewhat puzzled by the whole thing, as there seems to have been a
> lot of _general_ discussion about the theoretical constraints of fast attack
> times, CV feedthrough, etc., but no _specific_ discussion of the combination
> of the MOTM 800 EG and the MOTM 110 VCA. My own experimentation and
> discussion with Paul led me to put bigger attack-timing caps in my 800s,
> which made the combination behave more to my liking, but if there's some
> other known issue and solution, I'd appreciate hearing it (as an owner of
> four 800 EGs, two 110 VCAs, and one 190 VCA).
My guess is that if there is something wrong and it's not just perceptual
it's a hardware problem. Resistor in wrong place or failed component, the
problem Paul described with timing on cheap ADC inputs, who knows. I've
swapped parts on accident once or twice and got some weird behaviors with
my modules. These things, they happen.
When I first heard clicking on my 190 I was pretty annoyed with it. See,
like a lot of younger (loose term) musicians who have never owned an
analog synth I had never had to deal with this issue. Most, if not all
digital synths will trigger the VCAs at the zero cross point. It's
laughably trivial to do in software (and if you don't customers tell you
it's a bug...) Other ones will filter the attack, or other such stuff.
Clicking is frequently undesirable, so it's usually compensated for in DSP
based synths.
I'm guessing a lot of analog synthesis newcomers hear this for the first
time and think something is broken. Then you get the "me too!"s when
someone with a legitimate hardware problem complains about clicking.
Anyway, that's what I see.
Analog just requires a different bag of tricks than DSP synths. Sometimes
I'll use the sync i/o on a 300 with the gate to "reset" the oscillator and
line it up to reduce clicking. (Works really well when using the LFO as
sub oscillator...) You really get up close and personal with your signal
on a modular...
--mikes