Patent ID: 7376236

Claim:
A speaker device for emitting subsonic, sonic or ultrasonic compression waves, said device being comprised of: a rigid emitter plate having an outer face oriented outward and an inner face, said emitter plate having a plurality of apertures extending between the outer and inner faces; a thin piezoelectric film disposed across the apertures of the emitter plate, wherein the thin piezoelectric film is configured to be distended into an arcuate emitter configuration at each of the plurality of apertures; electrical contact means coupled to the piezoelectric film for providing an applied electrical input; and pressure means coupled to the emitter plate for developing a biasing pressure with respect to the thin film at the apertures to distend the film at each of the plurality of apertures into an arcuate emitter configuration capable of constricting and extending in response to variations in the applied electrical input at the piezoelectric film to thereby create a compression wave in a surrounding environment.