Stringed musical instrument control/tuning having piezo electric microphone/ metallic musical strings detector connected amplifier and electromagnetic coil oscillating same frequency metallic string controlling coil frequency/intensity.

摘要

The stringed instrument has a metallic musical string (1) with a piezo electric microphone (2a) vibration detector. The detector is connected to an amplifier (7) with the output connected to an electromagnetic coil (3). The coil electromagnetic field oscillates at the same frequency as the metallic string. The musician can control the frequency (4) and intensity (8) of the magnetic field produced by the electromagnetic coil.