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celebutante
Joined: Jun 29, 2007 Posts: 37 Location: Los Angeles
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andrewF
Joined: Dec 29, 2006 Posts: 1176 Location: australia
Audio files: 4
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Posted: Sun Feb 08, 2009 12:14 am Post subject:
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I'm sure you can do it but indeed a pita.
You will have to work out the signals sent when keys are pressed and develop a cct to mimic that. Maybe with Toms midi board you can use AND or NAND gates to get the desired signal, otherwise 49 transistors and associated components, not too bad as it will just be a lot of repetition, just need a big veroboard.
At least the ext. trigger circuit already exists.
Well, good luck
would like to hear how you get on as i have a set of Delta PCBs in a box somewhere and no keyboard |
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Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
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Rvlt
Joined: Mar 05, 2008 Posts: 33 Location: Berlin
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Posted: Sun Feb 08, 2009 10:58 am Post subject:
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I second that.
especially this threat:
http://www.midibox.org/forum/forums.html/topic,9388.0.html
I built the same circuit with 61 relays to midify my juno 6, and it worked (exept some minor flaws), but it was not cheap (> 100,- euros) and quite a bit of soldering.
I wanted to make some pictures in the next few days.
cheers. |
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celebutante
Joined: Jun 29, 2007 Posts: 37 Location: Los Angeles
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Posted: Sun Feb 08, 2009 1:23 pm Post subject:
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Thanks for the speedy replies. Will look into the links- it's pretty much like an organ, so that should help.
Andrew- it is a pretty neat synth. Obvious limitations (you can't really think of it like a real polysynth), but it makes neat noises and the filter sounds really "honky" and unique.
Mitchell |
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NerveJam
Joined: Oct 26, 2005 Posts: 105 Location: United Kingdom
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Posted: Fri May 06, 2016 8:12 am Post subject:
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The problem is that it's paraphonic, not monophonic.
CV/gate works fine when there's only one incoming pitch value, but falls apart when there are multiple - in this case, up to 49..
Logically, you'd have to convert incoming MIDI to 49 separate on/off outputs which parallel the actual keys. (via relays?)
Sounds like a job for an arduino? Not sure how you would control 49 separate relays though.. _________________ https://synteknik.com |
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NerveJam
Joined: Oct 26, 2005 Posts: 105 Location: United Kingdom
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Posted: Fri May 06, 2016 8:31 am Post subject:
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Rvlt wrote: | I second that.
especially this threat:
http://www.midibox.org/forum/forums.html/topic,9388.0.html
I built the same circuit with 61 relays to midify my juno 6, and it worked (exept some minor flaws), but it was not cheap (> 100,- euros) and quite a bit of soldering.
I wanted to make some pictures in the next few days.
cheers. |
404 ERROR! _________________ https://synteknik.com |
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tupinamba
Joined: May 14, 2010 Posts: 24 Location: France
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Posted: Thu Jan 19, 2017 10:57 am Post subject:
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Hi !
Celebutante, I was wondering if you had found a way to midify your Korg Delta, as I would love to do that too!... |
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celebutante
Joined: Jun 29, 2007 Posts: 37 Location: Los Angeles
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Posted: Wed Feb 01, 2017 2:55 am Post subject:
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tupinamba wrote: | Hi !
Celebutante, I was wondering if you had found a way to midify your Korg Delta, as I would love to do that too!... |
I never got around to it (one day I will!), but I believe the Doepfer MTC64 board is the best way as it converts MIDI note on/off data to up to 64 digital switches.
http://www.doepfer.de/mtc.htm
If you scroll down the page, someone shows how they used this to MIDI a vintage Solina string synth... this should apply to the Delta as well. |
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tupinamba
Joined: May 14, 2010 Posts: 24 Location: France
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Posted: Wed Feb 01, 2017 6:01 am Post subject:
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Thanks!
I'll have a look at the Midibox solutions as well, as I have already built several Midibox projects... |
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