Doepfer

Hello,

I have an Korg 800DV and I would like to sequence it with the
A-154/155/156 combo. But the A-156 only outputs V/Oct.

So how can you change the V/Oct signal into a Hz/V signal?

Thanks in advance Dirk.

Hi all

I cant get access to the A103 TB FILTER, just interested to know how 
accurate the sound is to the TB filter???

Ross

On 5/5/07 4:50 PM, "amnesia" <amnesia@internode.on.net> wrote:

> Hi all
> 
> I cant get access to the A103 TB FILTER, just interested to know how
> accurate the sound is to the TB filter???

Ross, 
did you see this review from Chris Carter in your search?
http://www.soundonsound.com/sos/dec03/articles/doepfermodules.htm

hmmm... doesn't seem like he knew what is was supposed to be doing. But,
alas, haven't tried one. And didn't look like Ingo had samples either, not
that i want a clone, but also curious about this one.
-phil

> Hello,
>
> I have an Korg 800DV and I would like to sequence it with the
> A-154/155/156 combo. But the A-156 only outputs V/Oct.
>
> So how can you change the V/Oct signal into a Hz/V signal?
>
> Thanks in advance Dirk.

So far there is no solution available within the A-100 to obtain quantized
Hz/V control voltages. The planned universal AD/DA module will probably
include a V/Oct -> Hz/V converter. But so far we have no planned release
date for this module. I'm not if there are other suitable converters
available.

Best wishes
Dieter Doepfer

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > Hello,
> >
> > I have an Korg 800DV and I would like to sequence it with the
> > A-154/155/156 combo. But the A-156 only outputs V/Oct.
> >
> > So how can you change the V/Oct signal into a Hz/V signal?
> >
> > Thanks in advance Dirk.
> 
> So far there is no solution available within the A-100 to obtain
quantized
> Hz/V control voltages. The planned universal AD/DA module will probably
> include a V/Oct -> Hz/V converter. But so far we have no planned release
> date for this module. I'm not if there are other suitable converters
> available.
> 
> Best wishes
> Dieter Doepfer
>
The AD/DA converter is on my wich list. It looks to me like a realy
cool module.

But can't the Hz/V to V/Oct be done with something like a lin to log
transformer or lin to exp transformer?

Hi vliesgaard

> But can't the Hz/V to V/Oct be done with something like a lin to log
> transformer or lin to exp transformer? 

I tried this, but not with satisfying results (Hz->Oct is critical for 
the bottom end; Oct->Hz is critical at the upper end)

Florian.

> The AD/DA converter is on my wich list. It looks to me like a realy
> cool module.
>
> But can't the Hz/V to V/Oct be done with something like a lin to log
> transformer or lin to exp transformer?

Yes, but such a circuit would require the same costly matched transistor
pair with temperature compensation/regulation as used in VCOs but with the
opposite function. We do not plan such a module as it is not required within
the A-100 and I do not expect reasonable quantities for such a module.

Best wishes
Dieter Doepfer