Hearing aid earmolds

Details Hearing aid earmolds Hearing aid earmolds

1981-06-11

1983-07-12

Hix, L. T.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

H04R 2500

Patent

active

043925472

ABSTRACT:
A resonant earmold for amplifying selected frequencies of the sound signal introduced into the earmold. The path for sound through the earmold includes transversely disposed, off-axis elongated chamber sections (24,25), the various sections functioning as a single acoustic chamber. Interchangeable inserts (30,50) of different dimensions are used, on a trial and error basis, for changing the dimensions of at least one of the sections for fine tuning the sound characteristics of the earmold to best match the hearing aid performance characteristics with the needs of the user.

REFERENCES:
patent: 261822 (1882-08-01), Atkinson
patent: 3047089 (1962-07-01), Zwislocki
patent: 3921756 (1975-11-01), Johnson
patent: 4311206 (1982-01-01), Johnson

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