hello scott,

yes, that is the most obvious solution for the problem.
i use an a131 vca for such applications. works well.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , "Scott E." <yahudinyhwh@s...>
wrote:

> Hey ingo and Peter,
>
> If either of these have a sufficient dynamic range, why not a

simple

> noise gate on the output to cure the bleed through If it was

applied

> gently enough, I don't see where it would adversely affect the

character

> of the filter as the noise gate should be out of the way by the

time the

> envelope got back past the bleed through level. I've heard a number

of

> "soft" gates on noisy synth outputs to keep the noise levels down

in a

> studio, why not on a single module Just a thought.
>
> Scott E.
> --------------------------------------------------------------------

---------

> selfoscillate wrote:
> > hello peter,
> >
> > the bleedthrough in vca-mode is not too loud.
> > i'll try to measure it when i'm on holidays next week.
> >
> > on the a101/2 you cannot hear the bleeding in the other
> > two modes because the module has a very low minimum
> > cutoff frequency. so all the audible frequencies are
> > fully attenuated when the frequency/amplitude knob
> > is fully counterclockwise. at least this is what i've
> > observed so far. by end of this week i'll get another
> > a101/2 and then i'll do some more investigations.
> >
> > yes, the lpg with resonance must be close to a borg in
> > lowpass mode. i really like the sound of the lpg.
> > this makes me looking forward to wiards reissue of
> > the borg filter. i hope that it will come out soon,
> > i already have reserved some rackspace for it ;-)
> >
> > best wishes
> >
> > ingo
> >
> >
> >
> > --- In Doepfer_a100@yahoogroups.com , "(i think you can figure

that

> > out)" <peter@b...> wrote:
> >
> >>--- In Doepfer_a100@yahoogroups.com , "selfoscillate"
> >><synaptic_music@y...> wrote:
> >>
> >>in vca mode there is always a bit of a signal feedthrough,
> >>which is not noticable in the other two modes.
> >>afaik this is because of the characteristics of the
> >>vactrols and a known side-effect. no problem imho,
> >>it's the sound that counts. now i understand why the
> >>buchla lowpass gate has such a good reputation.
> >>i need to buy another one soon.
> >>
> >>Interestingly enough, while the 291 lowpass gate does have bleed,
> >
> > it does
> >
> >>only in the other two modes, not the VCA mode. Regardless, Self
> >
> > speaks the
> >
> >>truth here. It's a quality of vatrols, the photo resistor being
> >
> > the cuplrit - they
> >
> >>don't close down all the way, never will.
> >>
> >>I would be interested to know the amount of bleed though. The

291

> >
> > is fine
> >
> >>when used with Buchla signal levels (basically they are line
> >
> > outputs), but with
> >
> >>Deopfer/Blacet/everybody else's in the six volt range, there's
> >
> > about 3mv. I've
> >
> >>been able to get this down to about a 1/4 of mv by throughing in

a

> >
> > bit of
> >
> >>feedback in internally. It does effect the amount of ringing
> >
> > (which you want in
> >
> >>a LGP), but you can easily pre-select your vactrols so that's not

a

> >
> > problem.
> >
> >>Diet: with your res pot, you've got something close a lowpass
> >
> > Borg filter.
> >
> >>- Peter
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >