Dual outlet passage hearing aid transducer

Details Dual outlet passage hearing aid transducer Dual outlet passage hearing aid transducer

H - Electricity

04

R

349/77

H04R 25/00 (2006.01) H04R 1/22 (2006.01) H04R 11/00 (2006.01) H04R 25/02 (2006.01)

Patent

CA 2040004

Knowles 90919 DUAL OUTLET PASSAGE HEARING AID TRANSDUCER Abstract of the Disclosure An improved high-frequency characteristic is achieved, in an otherwise conventional hearing aid receiver transducer by connecting each of the acoustic chambers on the two sides of the receiver diaphragm, in the receiver housing, directly through an outlet port and a sound transmission tube coupled into the ear canal of the hearing aid user; phase reversals due to resonances in the receiving acoustic chambers and tubes produce a high pass band in the output of the receiver as applied to the user's ear. An acoustically transparent contamination stop prevents contaminants (e.g. cerumen) from reaching the transducer motor but does not interfere with acoustic performance.

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