PIEZOELECTRIC LOUDSPEAKER AND PIEZOELECTRIC LOUDSPEAKER ARRAY

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric loudspeaker which secures reproduction performance of a wide sound range and can suppress deterioration of sound quality even in a limited space.

SOLUTION: A piezoelectric loudspeaker 801 radiates a sound wave by vibration in accordance with applied voltage. The piezoelectric loudspeaker includes: a substrate 810 including a first region 831 having first flexural rigidity and a second region 832 having second flexural rigidity different from the first flexural rigidity; a first piezoelectric element 821 which is installed in the first region 831 and to which the voltage of a first frequency band is applied; and a second piezoelectric element 822 which is installed in the second region 832 and to which the voltage of a second frequency band different from the first frequency band is applied.

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