Electrostatic transducer having a fixed electrode provided...

Details Electrostatic transducer having a fixed electrode provided... Electrostatic transducer having a fixed electrode provided...

H - Electricity

04

R

349/69

H04R 19/00 (2006.01) G01H 11/06 (2006.01)

Patent

CA 1202113

ABSTRACT OF THE DISCLOSURE An electrostatic transducer which includes a vibrating membrane provided between a fixed electrode and a movable electrode to which electric signals are applied. The transducer further includes a plurality of depressions provided concentrically with a center of the fixed electrode in a surface of the fixed electrode which is in contact with the vibrating membrane and a plurality of through openings corresponding with the plurality of depressions further provided in the fixed electrode whereby the resonant frequency of the electrostatic transducer is reduced and the conversion efficiency of electric signals to sound pressure is increased.

411172

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