Patent ID: 8148624

Claim:
An apparatus for a musical instrument, the apparatus comprising: a control unit comprising a signal processor and a flexible display face, the signal processor processing electro-acoustic signals according to a plurality of acoustic parameters, the display face comprising a first electronic visual indicia of the plurality of acoustic parameters; and a user control device operatively coupled to the control unit, the user control device selecting one of the plurality of acoustic parameters in the control unit using a first form of operation on the user control device and adjusting the selected acoustic parameter in the control unit utilizing the user control device using a second form of operation on the user control device, the second form of operation differing from the first form, wherein the display face comprises a second electronic visual indicia showing a level of adjustment provided from the user control device on the selected acoustic parameter; wherein the control unit comprises a flexible structure able to be mounted to a curved surface of the musical instrument, the flexible structure comprising the flexible display face, when mounted to the curved surface the display face comprises a curve; the control unit further comprises a plurality of electrode surfaces having at least one active transducer material between each plurality of electrode surfaces to form a thin and elastic layered structure, said active transducer material comprising one of a (1) charged electret film, (2) a polarized cellular electret film, (3) PVDF, and (4) piezoelectric paint.