Doepfer

The following Doepfer_a100 poll is now closed.  Here are the 
final results: 


POLL QUESTION: Would you like Doepfer to manufacture a Tendency Mask 
Generator module? (the Tendency mask generator at Sonology 
is a device which you feed an upper limit and a lower limit 
as cv inputs [in a doepfer system it could be
an extension of the a172 max/min]. There's also a clock 
which can either be internal or an external pulse. The 
device gives out random values between the upper and lower 
limits at the clock rate.) 
 

CHOICES AND RESULTS
- yes!, 17 votes, 54.84%  
- maybe, 7 votes, 22.58%  
- no., 7 votes, 22.58%  



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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

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com]
> Gesendet: Mittwoch, 21. September 2005 04:02
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Poll results for Doepfer_a100
>
> The following Doepfer_a100 poll is now closed.  Here are the
> final results:
>
>
> POLL QUESTION: Would you like Doepfer to manufacture a Tendency Mask
> Generator module? (the Tendency mask generator at Sonology
> is a device which you feed an upper limit and a lower limit
> as cv inputs [in a doepfer system it could be
> an extension of the a172 max/min]. There's also a clock
> which can either be internal or an external pulse. The
> device gives out random values between the upper and lower
> limits at the clock rate.)
>
>
> CHOICES AND RESULTS
> - yes!, 17 votes, 54.84%
> - maybe, 7 votes, 22.58%
> - no., 7 votes, 22.58%
>
>
>
> For more information about this group, please visit
> http://groups.yahoo.com/group/Doepfer_a100
>
> For help with Yahoo! Groups, please visit
> http://help.yahoo.com/help/us/groups/
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

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]

Excuse my name here it is of course Achtung_999 posting here a.k.a. Ernst
Sorry for that... crazy Gmail...


On 9/24/05, *--* <heinrich.himmelwasser@gmail.com> wrote:
>
> 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]

hello ernst,

as long as you use the a149/1 in dieters patch, there
will be no voltage output below the "lower" offset,
because the a149/1 outputs only positive voltages.

best wishes

ingo


--- In Doepfer_a100@yahoogroups.com, *--* 
<heinrich.himmelwasser@g...> wrote:
> 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@d...> 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]

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
>
>
>
>
>
>

Okay, thanks Dieter.
I'll test this tonight after work.
Since I don't have the comparator I think I'll use the polarising
mixer instead for the subtraction.

Greetings,

Ernst