PIEZOELECTRIC SPEAKER AND ITS DRIVING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a low-cost piezoelectric speaker which has smooth excellent frequency characteristics and can reproduce a high band of a high sound pressure level. SOLUTION: The outer periphery of a piezoelectric diaphragm 1 is attached to a thin flange 2b provided on a frame 2, and the center part of the piezoelectric diaphragm 1 is supported by a support member 2c provided on the frame 2 with an elastic body 3 between them.