Piezoelectric speakers

Details Piezoelectric speakers Piezoelectric speakers

1989-03-14

1990-12-18

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

381156, 310324, H04R 2500

Patent

active

049792199

ABSTRACT:
A piezoelectric speaker comprises a drive unit having an auxiliary diaphragm bonded with a piezoelectric transducer element for producing sound thereby and a horn member having a resonance device including a reflection cover defining a plurality of first cusps and a mid plate defining a plurality of second cusps laterally offset with respect of the plurality of first cusps for promoting the sound output in decibel of the speaker.

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