Hearing aid with audio path duct extension element, and extensio

Details Hearing aid with audio path duct extension element, and extensio Hearing aid with audio path duct extension element, and extensio

1981-06-23

1983-12-06

Tarcza, Thomas H.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

H04R 2500

Patent

active

044187874

ABSTRACT:
To match the frequency characteristics of the audio or acoustic path of a hearing aid to the remainder of the hearing aid system, an acoustic path extension element (10, 25, 40, 48, 52) is interposed in the acoustic path, the extension element being structural components separable and independent of the housing of the hearing aid, although it may be retained therein (FIG. 3), to permit matching of elements having different path lengths to the hearing aid. In a preferred form, the entrance and exit openings of the separable element are coaxial to permit replacement of existing audio duct connecting tubes, at least in part, by the element and thus permit adaptation and retrofitting of hearing aids with the matching element.

REFERENCES:
patent: 3080011 (1963-03-01), Henderson
patent: 3312789 (1967-04-01), Lewis et al.
patent: 3632140 (1972-01-01), Paine et al.
patent: 3947939 (1976-04-01), Steiner
patent: 4296829 (1981-10-01), Pedersen

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