Doepfer

In the absence of a new A-126, does anyone have an idea of how to create a frequency shifter using existing Doepfer modules?

Neil

Sent from my iPhone

> In the absence of a new A-126, does anyone have an idea of how to create a frequency shifter using existing Doepfer modules?
>
> Neil

I think that's not possible because of the required dome filter. That's a special allpass filter that shifts all frequencise from
about 50Hz to 10 kHz of the incoming audio signal by 90 degrees). The rest of the job could do two ring modulators, the A-143-9 and
mixers.

But we are working on an new frequency shifter (A-126-2) that will include a squelch circuit. The A-143-9 or any other quadrature
oscillator (e.g. the planned A-101-4) can be used as external quadrature oscillator (i.e. no built in oscillator).

Best wishes
Dieter Doepfer

Thanks Dieter,

I know it's a stupid question but will the external oscillator be patched via the front panel? I don't want to have to make a connection between them internally.

Neil

Sent from my iPhone

> On 14 Nov 2014, at 14:56, yahoo@doepfer.de [Doepfer_a100] <Doepfer_a100@yahoogroups.com> wrote:
> 
> > In the absence of a new A-126, does anyone have an idea of how to create a frequency shifter using existing Doepfer modules?
> >
> > Neil
> 
> I think that's not possible because of the required dome filter. That's a special allpass filter that shifts all frequencise from
> about 50Hz to 10 kHz of the incoming audio signal by 90 degrees). The rest of the job could do two ring modulators, the A-143-9 and
> mixers.
> 
> But we are working on an new frequency shifter (A-126-2) that will include a squelch circuit. The A-143-9 or any other quadrature
> oscillator (e.g. the planned A-101-4) can be used as external quadrature oscillator (i.e. no built in oscillator).
> 
> Best wishes
> Dieter Doepfer
> 
>

> Thanks Dieter,
>
>
> I know it's a stupid question but will the external oscillator be patched via the front panel? I don't want to have to
> make a connection between them internally.
>
>
> Neil

Yes, there will be two sockets for sine and cosine input. But there will be probably also a normalling solution (i.e. internal
connection between the A-143-9 or A-101-4 and the frequency shifter module via the switching contacts of the sine/cosine sockets).

Best wishes
Dieter Doepfer

Amazing thanks! There's a lot of excitement over this from people I've spoken to, as it's such a unique sound but they want to get a Doepfer module to do it with.

Regards,

Neil

Sent from my iPhone

On 17 Nov 2014, at 09:19, yahoo@doepfer.de [Doepfer_a100] <Doepfer_a100@yahoogroups.com> wrote:

>> Thanks Dieter,
>> 
>> 
>> I know it's a stupid question but will the external oscillator be patched via the front panel? I don't want to have to
>> make a connection between them internally.
>> 
>> 
>> Neil
> 
> Yes, there will be two sockets for sine and cosine input. But there will be probably also a normalling solution (i.e. internal
> connection between the A-143-9 or A-101-4 and the frequency shifter module via the switching contacts of the sine/cosine sockets).
> 
> Best wishes
> Dieter Doepfer
> 
> 
> 
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> Yahoo Groups Links
> 
> 
>

>
> Yes, there will be two sockets for sine and cosine input.
>
>
That's great, that begs for misuse :D
Curious what sounds that will result in....[?]


[Non-text portions of this message have been removed]

Just what I was thinking!! Imagine running the A-137-1 into it, or a graphic VCO...

Sent from my iPhone

> On 17 Nov 2014, at 11:39, achtung_999 heinrich.himmelwasser@gmail.com [Doepfer_a100] <Doepfer_a100@yahoogroups.com> wrote:
> 
> >
> > Yes, there will be two sockets for sine and cosine input.
> >
> >
> That's great, that begs for misuse :D
> Curious what sounds that will result in....[?]
> 
> [Non-text portions of this message have been removed]
> 
>