PLANAR ACOUSTIC TRANSDUCER

PROBLEM TO BE SOLVED: To enlarge the amplitude of a vibrating surface in simple configuration. SOLUTION: Supporting surfaces 52B-52E of a vibrating film 50 are deformed by buckling, so that a vibrating surface 54 is considerably displaced (amplitude). Therefore, an electric signal representing acoustics desired to be generated is electrified to a coil, so that the vibrating film is vibrated in response to the electric signal and an acoustic signal can be generated. Namely, the amplitude of the vibrating surface 54 can be enlarged in simple configuration without increasing the number of components. Thus, sound pressure can be increased. Furthermore, lower-register reproducibility also becomes excellent. COPYRIGHT: (C)2008,JPO&INPIT