Audio transducer having piezoelectric device

Details Audio transducer having piezoelectric device Audio transducer having piezoelectric device

1994-05-02

1998-03-10

Tran, Sinh

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electrostrictive, magnetostrictive, or piezoelectric

381174, 381202, 381196, H04R 2500

Patent

active

057270767

ABSTRACT:
An audio transducer is disclosed that has a piezoelectric driving element and a diaphragm having a sheet configured as a flat, curvilinear plane. A lightweight, rigid bridge element connects the piezoelectric device to the diaphragm. Several bridge configurations are shown that emphasize or reduce various characteristics such as frequency response and vertical dispersion. Also, several diaphragm configurations are disclosed in which the diaphragms have as few as a single diaphragm sheet or as many as four sheets. In each case the diaphragm sheets are configured as a flat, curvilinear plane.

REFERENCES:
patent: 1803275 (1931-04-01), Sawyer
patent: 3548116 (1970-12-01), Schafft
patent: 3941932 (1976-03-01), D'Hoogh
patent: 4029911 (1977-06-01), Albinger
patent: 4584439 (1986-04-01), Paddock
patent: 4903308 (1990-02-01), Paddock et al.
patent: 5054063 (1991-10-01), Lo et al.
patent: 5249237 (1993-09-01), Paddock
patent: 5450497 (1995-09-01), Paddock

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