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tasteless
Joined: Feb 18, 2013 Posts: 6 Location: Australia
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Posted: Mon Feb 18, 2013 4:31 pm Post subject:
Drum Module Triggering ? Subject description: From Drum Machine Aux outputs |
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Hey , New guy here.
Great forum !
I've been devouring all of the information in WhaHoah's recent thread on simple analogue drum ccts As , I've always wanted to build a little module using similar elements.( 808,606,Mini Space Rockers etc..).
So I was wondering how I could go about triggering these sounds from the Auxillary outputs of a Drum Machine ?
I've got an old ETI percussion synth that will trigger well using any short , sharp ,fast-transient sound ( ie- cowbell , rimshot etc..) But , I havent been able to find a cct diagram for it , to see how it works.
I guess what I'm looking for is some sort of Audio to CV trigger ?
Any advice - Extremely welcome.
Cheers. |
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-minus-
Joined: Oct 26, 2008 Posts: 787
Audio files: 13
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Posted: Mon Feb 18, 2013 6:03 pm Post subject:
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I've built several of these onto stripboard. They are a simple circuit which works well. Will turn a gate into a trigger if that is what you are after.
http://www.cgs.synth.net/modules/cgs24_gatetotrigger.html
EDIT: Actually, just reading through your post again, maybe this isn't what you are after. You are wanting to trigger using an audio signal?  |
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analog_backlash

Joined: Sep 04, 2012 Posts: 393 Location: Aldershot, UK
Audio files: 21
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Posted: Mon Feb 18, 2013 6:26 pm Post subject:
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Ditto on the welcome.
I was a bit confused by this. I think that you want the audio output of your drum machine to trigger external circuits. If so, a modification of the MFOS circuit shown here, might work:
http://www.musicfromouterspace.com/forums.html?MAINTAB=SYNTHDIY&PROJARG=SOUNDLABMINISYNTH/drumtrigger/drumtrigger.html&VPW=1356&VPH=551
If you had a buffered audio signal going to D1/D2 (after removing the piezo, amp U1-A and associated components), it should produce a trigger signal at R9. I'm not sure if you actually need any CV signals, but I may be totally misunderstanding your request. You might also require it to work at a different voltage or from a single rail supply, which might mean some re-designing.
Anyway, they're my initial thoughts.
Gary |
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tasteless
Joined: Feb 18, 2013 Posts: 6 Location: Australia
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Posted: Mon Feb 18, 2013 11:54 pm Post subject:
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Thanks Guys - Great info in both posts.
The second half of both ccts is on target.
The MFOS cct , May work as is - Because essentially that is what I have happening with My ETI Percussion Synth ( Which I would assume - was intended to be driven by Piezo elements ).
I just plugged a Drum Machine into it out of curiosity one day And , It worked !
I sort of envisioned a cct ( While I was in the shower ) that involves a buffer and envelope detector.
Which I shall attempt to explain - as soon as I've gotten My head around it.
Perhaps I should take longer showers. |
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