PIEZOELECTRIC TYPE ELECTRO-ACOUSTIC TRANSDUCER AND ELECTRONIC APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric type electro-acoustic transducer which improves a sound pressure level by suppressing generation of split vibration in an electro-acoustic transducer using a piezoelectric element.SOLUTION: A piezoelectric type electro-acoustic transducer includes: a first piezoelectric element; a second piezoelectric element; and a metal member. The second piezoelectric element is coupled to the first piezoelectric element and has a shape whose symmetry is lower than that of the shape of the first piezoelectric element. The metal member is connected to the first piezoelectric element. Moreover, phases of electric signals inputted into the first piezoelectric element and the second piezoelectric element have a reverse phase relation.