Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1990-11-09
1992-11-24
Ng, Jin F.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 685, 381 69, 181130, 181135, H04R 2500
Patent
active
051666596
ABSTRACT:
An improved hearing aid that reduces occlusion caused by the accumulation of ear wax includes a hearing aid body, an amplifier disposed within the hearing aid body, and an ear canal body adapted for insertion in the auditory canal of a human ear. The ear canal body has a deep transverse groove about 1 mm to 5 mm in width to form a cavity that is accessible to clear ear wax buildup in the cavity. A first passageway from the amplifier to one side of the cavity provides a conduit for sound to travel from the amplifier to the cavity. An end portion of the ear canal body forms a plow to divert ear wax as it is inserted into the auditory canal. The plow portion is of a cross sectional area substantially equal to the auditory canal. The plow portion has a second passageway that joins the cavity and the end of the ear canal body closest the ear drum. The second passageway is larger in diameter than the first passageway and its central axis is offset from the central axis of the first passageway.
REFERENCES:
patent: 3983336 (1976-09-01), Malek
patent: 4311206 (1982-01-01), Johnson
patent: 4520236 (1985-05-01), Gauthier
patent: 4706778 (1987-11-01), Topholm
patent: 4800982 (1989-01-01), Carlson
patent: 4879750 (1989-11-01), Nassler
patent: 4972492 (1990-11-01), Tanaka
Ng Jin F.
Oda Christine K.
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