Guitar Oscillations Captured with iPhone 4

YouTube Uploaded by justkylevids on Jul 11, 2011
Not a synth but thought it was interesting from a natural oscilloscope sort of perspective.

"I just happened upon this trick when testing what it was like filming from inside my guitar. *Note this effect is due to the rolling shutter, which is non-representative of how strings actually vibrate.

Tips:
• You must have the strings brightly backlit to get the camera to capture at such a high frame rate (pure conjecture). You can see how the effect fades when the buildings come into view.
• Use a pencil
*This was used with the front facing camera, try the back camera, it may capture better!

There is a heated discussion with *real science* over at reddit
http://www.reddit.com/r/reddit.com/comments/in2rc/guitar_string_oscillations_..."