Electret transducer with variably charged electret foil

Details Electret transducer with variably charged electret foil Electret transducer with variably charged electret foil

H - Electricity

04

R

349/69

H04R 19/01 (2006.01) G01H 11/06 (2006.01)

Patent

CA 1185694

-22- ELECTRET TRANSDUCER WITH VARIABLY CHARGED ELECTRET FOIL Abstract An electret transducer for producing a highly directional response characteristic comprises a backplate and, superimposed thereon, an electrostatically charged electret foil. The electrostatic charge varies according to a predetermined relationship. The sensitivity of the electret transducer, at any point thereon, is directly proportional to the electrostatic charge on the electret foil at that point.

415615

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