Apparatus for selective noise suppression for hearing aids

Details Apparatus for selective noise suppression for hearing aids Apparatus for selective noise suppression for hearing aids

1980-12-22

1983-09-20

Rubinson, G. Z.

179 1A, 179 1F, 179 1VL, 179107FD, H04B 1500, H04R 2500

Patent

active

044058314

ABSTRACT:
Noise suppression apparatus is interposed between the transducer and the amplifier of a hearing aid, allowing the user to adjust the operation of an automatic level control circuit to provide suppression of background sounds with negligible effect on audibility of close-in sounds.

REFERENCES:
patent: 3229049 (1966-01-01), Goldberg
patent: 3231686 (1966-01-01), Hueber
patent: 3290442 (1966-12-01), Suganuma
patent: 3497622 (1970-02-01), Markin et al.
patent: 3818149 (1974-06-01), Stearns et al.
patent: 3920931 (1975-11-01), Yanick, Jr.
patent: 3928733 (1975-12-01), Hueber
patent: 4118604 (1978-10-01), Yanick
patent: 4119814 (1978-10-01), Harless
patent: 4170720 (1979-10-01), Killion
patent: 4254303 (1981-03-01), Takizawa

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