Dual outlet passage hearing aid transducer

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

1990-05-01

1991-11-26

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 69, H04R 2500

Patent

active

050689010

ABSTRACT:
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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patent: 4867267 (1989-09-01), Carlson

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