Theremin Scrubbing 

In this project I mapped an audio file onto thin air using a theremin. The distance from my hand to the theremin corresponds to a time in an audio file. I use a phase vocoder so that the pitch of the audio file is consistent regardless of how fast my hand is moving. Pitch detection and a phase vocoder are implemented in Max/MSP. 

 
(It's also way more fun to play with then to watch)