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funtykigs
Joined: Feb 09, 2010
Posts: 17
Location: UK
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 Posted: Tue Feb 09, 2010 4:54 pm Post subject:
Nord G2 and 'real' modular synth
Subject description: via Volta, Silent Way etc |
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So I've started to control my small Eurorack system with my G2 by way of Volta.
It's going well so far, what I'm now interested in is sending signals back to the G2.. I've explored encoding a CV as audio by using it to control a VCA acting on white noise or a tone.. seem to get some usable results by then doing an envelope follow in the G2 to 'decode' it.
I figured there must be someone out there doing similar stuff?
Also what voltages are the sustain and control inputs on the G2 expecting? The manual makes no mention of it.
Thanks
FK |
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blue hell
Site Admin
Joined: Apr 03, 2004
Posts: 24171
Location: The Netherlands, Enschede
Audio files: 280
G2 patch files: 320
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| Posted: Tue Feb 09, 2010 5:02 pm Post subject:
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 FK
re. the inputs ... it's 0 .. 5 V I think ... Rob Hordijk experimented with this I think, maybe others too - you might be able to find some better info on this forum - sorry to not have time right now to hunt for links.
Others have been working on making a G2 and and a 'real' modular close together, hope some will chime in here. There definitely are posts about this here 
_________________
Jan
also .. could someone please turn down the thermostat a bit.
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varice
Joined: Dec 29, 2004
Posts: 961
Location: Northeastern shore of Toledo Bend
Audio files: 29
G2 patch files: 54
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| Posted: Tue Feb 09, 2010 11:34 pm Post subject:
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| funtykigs wrote: | So I've started to control my small Eurorack system with my G2 by way of Volta.
It's going well so far, what I'm now interested in is sending signals back to the G2.. I've explored encoding a CV as audio by using it to control a VCA acting on white noise or a tone.. seem to get some usable results by then doing an envelope follow in the G2 to 'decode' it. |
Ah – good to read that this idea seems to work well for you. I, along with great input from Wout Blommers, had suggested the idea of using volume control pedals and/or pots on DIY control boxes to manually modulate audio signal levels into the G1 and G2 audio inputs along with Envelope Follower modules as an alternative way (instead of MIDI CCs) to get true analog control signal inputs. Our ideas were suggested here:
http://electro-music.com/forum/topic-32416.html
And here:
http://electro-music.com/forum/topic-32424.html
But I don’t recall anyone else posting results of how well this method works. Your excellent idea to use modulated audio levels from “real” modular VCAs for CV input from analog modular synths adds an extension to the application of Wout’s and my ideas…
The result of my own testing is that a square wave of at least few hundred hertz (e. g. one that can be generated by an LFO) is the best audio signal to be used as a source as opposed to any other source (like white noise)… and setting the Envelope Follower module Attack and Release to the fastest (minimum) settings gives the quickest response…
| funtykigs wrote: | | I figured there must be someone out there doing similar stuff? |
Well, there is at least this topic about modifying G2s (and G1s) to produce a DC CV output for external module control…
http://electro-music.com/forum/topic-12266.html
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varice |
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