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 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
audio to midi?
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laurentius



Joined: Nov 17, 2006
Posts: 16
Location: frankfurt
G2 patch files: 1

PostPosted: Sun Aug 16, 2009 11:07 am    Post subject: audio to midi? Reply with quote  Mark this post and the followings unread

hi there everybody!

i am curious if anybody has an idea about my following plan: i would love to triger clips/midinotes (in ableton live) via incoming audio (voice for instance). i don't really need audio pitch to corresponding midi pitch - much better could work something like different input volume creates different midi-events (some kind of accidental).
i thought that maybe my nord modular g2 (which i haven't used in ages and somehow forgot about how to program it) could help me with that. is there a way to plug my guitar or mic in and have my desired result? to not create midi chaos (in case there are six string ringing at the same time) i though of a kinf of theshold - below it no midi note being created, above it depending on the volume dirfferent midi notes...
do i sound realisitic? Wink

any hints highly appreceated!

lars
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BobTheDog



Joined: Feb 28, 2005
Posts: 3830
Location: England
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PostPosted: Sun Aug 16, 2009 11:54 am    Post subject: Reply with quote  Mark this post and the followings unread

HI,

Have a look at:

http://electro-music.com/forum/viewtopic.php?highlight=guitar+midi&t=25395
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laurentius



Joined: Nov 17, 2006
Posts: 16
Location: frankfurt
G2 patch files: 1

PostPosted: Mon Aug 17, 2009 1:36 am    Post subject: Reply with quote  Mark this post and the followings unread

yeah thanks.
still this looks very complicated. all i need is some audio to cc that works more velocity-orientated without exact pitch tracking, you know.
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laurentius



Joined: Nov 17, 2006
Posts: 16
Location: frankfurt
G2 patch files: 1

PostPosted: Tue Aug 18, 2009 2:44 am    Post subject: Reply with quote  Mark this post and the followings unread

ok folks,

i attached a simple patch explaining my needs. it is just made up very roughly. i just need your advise now concerning velocity control. it would be great to have different incoming velocities transforming into different midinotes. any ideas?

thanks alot,
laurentius


audio to cc.pch2
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mush



Joined: Jul 26, 2007
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Location: copenhagen noise lab, denmark
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PostPosted: Tue Aug 18, 2009 12:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

A couple of window-switches should do this job for you! Just rectify the signal first so it is just positive. Just put it in parallel after the envelope-follower.
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Antimon



Joined: Jan 18, 2005
Posts: 3618
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PostPosted: Tue Aug 18, 2009 2:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

Or just pipe the EnvFollow output straight into the velocity input. Smile That's always positive. I also inserted a delay - there may be a little while before the signal reaches its peak amplitude, and <10 ms may go by unnoticed. I fiddled with the channel too for testing, you need to change it back to 1.

/Stefan


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laurentius



Joined: Nov 17, 2006
Posts: 16
Location: frankfurt
G2 patch files: 1

PostPosted: Sat Aug 29, 2009 4:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

thanks for your answers.
still needed: the midi note output shoul be influenced by the incoming velocities. like low velocitiy triggers midinote c, and high velocity triggers midinote d.
what also doesnt work for me yet is that a midisignal is sent constantly when there is audioinput. what i would need is a kind of "one shot" that only triggers once with each peak and then waits for a break before the next peak....

laurentius
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x_x



Joined: May 05, 2008
Posts: 215
Location: mother earth
Audio files: 4

PostPosted: Sat Aug 29, 2009 6:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

get pure data (open source version of maxmsp), and search for an object called "fiddle". that works for converting audio to midi... I believe it uses a fast fourier transform... for the velocities you will have to code it... or in this case draw the diagrams or whatever they call it with that program....

I think that's the easiest way.

The other way would be to code it from scratch using chuck, sc3, java ... babalablabalabalbala

cheers
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