I recorded the sound of a pen striking a half-full soda can. I loaded this into Sampler and went to the MIDI panel and mapped "Aftertouch" (pad pressure) to "Loop Length" with a value of -100. Now pad pressure modulate the loop length.
Here is a video of this sound design work in progress – http://youtu.be/Ld5KWyGs9_M.
Mark Mosher
Electronic Musician, Boulder, CO
http://www.markmoshermusic.com
http://www.aiwinter.net
http://bouldersynth.com (meetup)
Mark Mosher 
2 replies on “Manipulating a Percussive Soda Can Sample using Pad Pressure on Ableton Push #MadeWithLive”
I have a few devices but not the one you mentioned, so thanks for dropping this in the comments!!! Love the Push.
Here is a link to that device
http://subaqueousmusic.com/aq-push-pack-for-aftertouch/
I wrote something similar in Max for Live for converting aftertouch to any CC so I could use aftertouch with Slim Phatty.This is much more polished than what I came up with, but I did have scaling.
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Awesome Mark!
Have you messed around with the Push Aftertouch Max for Live Patch by Subaqueous? It gives you much more control over Push’s Aftertouch.
Cool Idea man!
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