Electromagnetic Steel Disk

A sound sculpture
Ted Apel
steel, electromagnet, electronics
University of Texas, Austin as part of the 1993 SEAMUS conference. March 31-April 4 1993.
Installed at WORKS/San Jose as part of the SoundCulture 96 festival. April 11- May 18 1996

The sound of the disk is used to modulate an electromagnet which in turn causes the disk to sound. This feedback allows the plate to continuously produce sounds at its natural resonant frequencies. The sound can be changed by lightly taping the disk.