Any electronics/syth gurus out there?

[BassChuck]

Anyone able to help me understand the curcuitry for this:


http://www.youtube.com/user/benpumpkin

I'd like to build something like this myself. I'm seeing a hollow box as resonator, a small speaker that plays into the strings (and creating the feedback). So there is the obvious 'guitar-like' things: strings, bridge, tuners, nut, pickups and amp. What I'm wondering about is the two knobs to the end of the box. (it doesn't help that the sound is way out of sync in the video) I'm thinking that there is a ring modulator with depth and speed control.

Anyone with electronics building and/or design experience would be a big help. Thanks.

[BassChuck]

can anyone help?

[MakiSupaStar]

I would be interested in something like this too.

[theshadow2001]

I don't know why I'm doing your research for you but..

The Feedback Harmonizer is an acoustic electronic work that utilizes a sound board to generate feedback. The acoustics travel into an onbaord contact microphone, into a delay, into an osc[illator] and out the speaker on the soundboard. The result is a very sweet sound that can be played soft and quiet or very loud and overdriven.

You can buy it off of him for 900 - 1400