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Thread
2004-11-23 by Fernando
2004-11-23 by Ryan Williams
>
> Hi all,
>
> I wonder about an external resonance circuit by sending the output back
> to the BP input
> via VCA.
> Anyone tried this?
>
> Fernando
2004-11-23 by cgs@oldmail.charlielamm.com
On Tue, 23 Nov 2004, Fernando wrote:
>
>
> Hi all,
>
> I wonder about an external resonance circuit by sending the output back to the BP input
> via VCA.
> Anyone tried this?
>
> Fernando
>
>
>
>
>
>
> See the following URLS for the CGS Modular Synth home page:
> Main: http://www.cgs.synth.net/
> Secondary: http://otherunicorn.0catch.com/synth/
> Yahoo! Groups Links
>
>
>
>
>
>
>
2004-11-24 by Fernando
2004-11-24 by ALMAGATA@telefonica.net
>M=298184.5639630.6699735.3001176/D=grplch/S=:H</td></tr></table><!--
> <html><body>
>
>
> <tt>
>
>
> Thanks Ryan and Charlie for your help and info.
>
>
>
> What I mean is to redirect the output to the BP input externally,
> using other modules
>
> (VCA), without applying any mod to Ken's standard Steiner PCB.
>
>
>
> The experiment should be done having the Resonance control to
> minimum and controlling
>
> an external VCA. The signal may have to be attenuated or amplified
> before or after the
>
> VCA and may be the sign changed...
>
>
>
> Anyone tried this or like to try? =:)
>
>
>
> Thanks again,
>
>
>
> Fernando
>
>
>
>
>
>
>
> </tt>
>
>
>
>
> <tt>
> See the following URLS for the CGS Modular Synth home page:
>
> Main: http://www.cgs.synth.net/
>
> Secondary: http://otherunicorn.0catch.com/synth/</tt>
>
>
>
>
>
>
>
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2004-11-24 by Fernando
> Yes You can do VC resonance this way. Just remember to invert the
> signal, using an inverting VCA (-input) or using a spare inverter. This
> is the way for VC Res from the 70`s....
2004-11-25 by cgs@oldmail.charlielamm.com
On Wed, 24 Nov 2004, Fernando wrote:
>
>
>
> Thanks Josue, I imagine it could be possible externally. I was looking at the
> schematic when I frst posted the question. Just wanted some "real life" report about how it
> worked. I does not seem so evident as with other filter designs...
>
> Charlie, your mod looks cool and minimal, thank you. May be one could implement just a
> switch and two sockets to your resistors to switch between "normal" and external
> (ext. VCA) resonance control...
> That would be a minimum modification / maximum satisfaction =:)
> Anyhow, am I wrong or the pot legs are swaped in your drawing? One should send the
> wiper to the VCA as I understand from CGS35 schematic...
>
> Fernando
>
> > Yes You can do VC resonance this way. Just remember to invert the
> > signal, using an inverting VCA (-input) or using a spare inverter. This
> > is the way for VC Res from the 70`s....
>
>
>
>
>
>
>
> See the following URLS for the CGS Modular Synth home page:
> Main: http://www.cgs.synth.net/
> Secondary: http://otherunicorn.0catch.com/synth/
> Yahoo! Groups Links
>
>
>
>
>
>
>
2004-11-26 by Andy Wilson
> What I mean is to redirect the output to the BP input externally,minimum
> using other modules
> (VCA), without applying any mod to Ken's standard Steiner PCB.
>
> The experiment should be done having the Resonance control to
> and controllingI tried this last night, taking the Steiner O/P through an Oakley VCA
> an external VCA. The signal may have to be attenuated or amplified
> before or after the
> VCA and may be the sign changed...
>
> Anyone tried this or like to try? =:)
2004-11-26 by Fernando
>reasonably wellMay be some gain needs to be applied. Sometimes is about 4x...
> > Anyone tried this or like to try? =:)
>
> I tried this last night, taking the Steiner O/P through an Oakley VCA
> and back into the BP input. Works reasonably well like this (Didn't
> need to invert the I/P to the VCA BTW).
>
> Regards
>
> Andy
2004-11-26 by sasami@hotkey.net.au
>Hi Fernando,_______________________________________________________________________
>
>> What I mean is to redirect the output to the BP input externally,
>> using other modules
>> (VCA), without applying any mod to Ken's standard Steiner PCB.
>>
>> The experiment should be done having the Resonance control to
>minimum
>> and controlling
>> an external VCA. The signal may have to be attenuated or amplified
>> before or after the
>> VCA and may be the sign changed...
>>
>> Anyone tried this or like to try? =:)
>
>I tried this last night, taking the Steiner O/P through an Oakley VCA
>and back into the BP input. Works reasonably well like this (Didn't
>need to invert the I/P to the VCA BTW).
>
>Regards
>
>Andy
>---
>
>Andy Wilson
>http://www.techman.synth.net
>andy@...
>
>
>
>
>See the following URLS for the CGS Modular Synth home page:
>Main: http://www.cgs.synth.net/
>Secondary: http://otherunicorn.0catch.com/synth/
>Yahoo! Groups Links
>
>
>
>
>
>
>
>