Hearing aid ear mold with improved discrimination

Details Hearing aid ear mold with improved discrimination Hearing aid ear mold with improved discrimination

1979-10-04

1982-01-19

Hix, L. T.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

179 1E, H04R 2502

Patent

active

043112064

ABSTRACT:
An improved type of ear mold which is used with a hearing aid of conventional design, but is provided with an inner chamber, to which sound is communicated from the hearing aid through a plastic tube, and from which the sound is communicated to the inner ear, through a neck portion of the ear mold, into which is inserted a tubular metal insert of selected internal diameter and length, which communicates between the inner chamber and the inner ear. The volume of the inner chamber, in combination with the dimensions of the inner passage through the insert, defines an acoustic resonating system, which serves to accentuate selected frequencies which pass from the hearing aid into the ear mold.

REFERENCES:
patent: 2377739 (1945-06-01), Wyekoff
patent: 3047089 (1962-07-01), Zwislocki
patent: 3080011 (1963-03-01), Henderson
patent: 3126977 (1964-03-01), McGee
patent: 3368644 (1968-02-01), Henderson
patent: 3602330 (1971-08-01), Johnson
patent: 3688863 (1972-09-01), Johnson
patent: 3732382 (1973-05-01), DeWitt
patent: 4010820 (1977-03-01), Johnson
patent: 4069400 (1978-01-01), Johnson et al.

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