Doepfer

Hello Ernst,

for this function you simply need a subtraction unit (e.g. the analog sum
output of the A-167) that generates the control voltage for the VCA from the
difference of the two voltages, e.g.:

CV1 -> offset voltage
CV2-CV1 -> control voltage for the VCA that controls the level of the
A-149-1 output

If the module that has to be controlled features 2 CV inputs (as most of the
A-100 modules) you need only two additional modules: a VCA (e.g. A-132) and
a subtraction unit (e.g. A-167). Subtraction can also be carried out by a
mixer (A-138) + voltage inverter (A-175).

In contrast to you I still don't think that this function justifies a new
module. But if there are sufficient inquiries we could manufacture such a
module. For this a poll that includes the option "would you purchase such a
module" will help us to decide to develop/manufacture the module.

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von *--*
> Gesendet: Samstag, 24. September 2005 17:14
> An: Doepfer_a100@yahoogroups.com
> Betreff: Re: [Doepfer_a100] Poll results for Doepfer_a100
>
>
> Hello Dieter,
>
> The patches you describe here are both close to the unit I tried
> to decribe
> (thanks for that!!).
> However the lower voltage as an offset is a misunderstanding.
> For as far as I remember it was so with the TMG at sonology that
> if you put
> the lower and upper voltages
> on the same level that it would only output that voltage. In both your
> patches it also generates output below..
> Maybe I'm wrong.. But I will defianately start investigating.
> And also I would still be interested in a modulel ike this, saves a lot of
> patchcords and modules I can use in the rest of the patch. ;-)
> Anyway I will get back on this later this week after I have contacted my
> sources at Sonology.
>
> Friendly greetings,
>
> Ernst
>
> On 9/21/05, Dieter Doepfer <hardware@doepfer.de> wrote:
> >
> > From my understanding this can realized with an A-149-1, VCA
> (e.g. A-132)
> > and mixer (e.g. A-138a). The clock is the A-149-1 clock, lower
> CV goes to
> > one A-138a input (kind of mixer offset), the A-149-1 output is processes
> > by
> > a VCA with VCA CV as upper CV, the VCA output goes to another
> mixer input.
> > The mixer output is the Tendency mask generator output. The
> A-149-1 could
> > also be replaced by an random module A-118 and a S&H A-148. In this case
> > the
> > clock goes to the A-148 clock input.
> >
> > I don't think that it justifies a new module even though it would be no
> > problem for us.
> >
> > Best wishes
> > Dieter Doepfer
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>