Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1988-09-15
1991-07-09
Isen, Forester W.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
181132, H04R 2500
Patent
active
050312197
ABSTRACT:
An earmold and a method of manufacturing an earmold for a hearing aid that conveys amplified sound from the hearing aid into the ear canal to a closed cavity adjacent the tympanic membrane. The earmold includes an acoustic conduction tube having an external diameter smaller than the ear canal and a flexible flanged tip that exerts negligible pressure on the wall of the canal. One end of the tube is held in place in the canal by the flanged tip. The opposite end of the tube may be positioned in the ear aperture by a fitting in the ear concha that may be integral with the tube. The hearing aid and the earmold leave the canal open preferably to a point past the canal isthmus.
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MacAllister M. Duncan
Ward Gary L.
Epic Corporation
Isen Forester W.
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