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Old 11-08-2012, 11:50 PM   #1
rmp5s
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mp3 to MIDI?

Just a quick question...

I do lots of recording with MIDI and VST stuff. I was just wondering...is it possible to extract MIDI from mp3 or another audio source?
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Old 11-09-2012, 12:18 AM   #2
DisarmGoliath
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In theory, yes... but it has to be very clean audio and it is only likely to work with any accuracy if it is single-notes rather than chords. If you mean the .mp3 of a fully-mastered song with all the elements mixed down to a single stereo file though - the answer is a resound 'no'.
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Old 11-09-2012, 12:29 AM   #3
rmp5s
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I'm not trying to get notes and chords and all that...just hat, snare and bass drums. Just the basic structure to tweak. Something to work from. I'm thinking that if a load a track into Reaper, EQ it to hell and back to single out the hat, snare and bass drums and use Trigger, I might be able to do it but I haven't had a chance to mess with it yet. Wondering if anyone had any ideas on how to do it, if it's possible at all.

Like you said though, I think trying to get guitar or bass from a song would be all but impossible...
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Old 11-09-2012, 12:34 AM   #4
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Trigger will probably work, if you filter out as much as you can of the unwanted stuff (doing so for the hi-hat will be quite tricky though, in particular) but I wouldn't expect anything incredible if the song is a commercial release, as it will already have been compressed/limited to hell and back, making it a lot harder for Trigger (or any other transient-detection program) to pinpoint the attack of the hits, and distinguish them from the rest of the mix.
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Old 11-09-2012, 01:14 AM   #5
rmp5s
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Yea...I'm messing with it now. Downloaded a trigger plugin called DST Trigger Free and I'm tinkering with it. I MIGHT be able to do it. Dunno. If I could even just get the bass drum and the snare, that would work. We shall see.

Anyone else have any ideas?
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Old 11-09-2012, 03:16 AM   #6
rmp5s
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Update:

I did it!

...ok...ok...it's in the works, but it'll work. Here's how -

1st way is to CRANK UP a noise gate so ONLY the bass and snare hits come through. From there I can run it through that free trigger thing I mentioned and it picks it up just fine.

2nd way is using a program called Beat to MIDI. It's basically the same idea as before but might be a bit more flexible and/or dynamic. I'll have to see tomorrow. Thanks man!
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