Non-occludable transducers for in-the-ear applications

Details Non-occludable transducers for in-the-ear applications Non-occludable transducers for in-the-ear applications

1991-12-20

1993-06-15

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 69, 381 231, 381 686, H04R 2500

Patent

active

052206122

ABSTRACT:
An in-the-ear electroacoustic transducer is constructed to limit the effect of accretion of cerumen on acoustically active surfaces: to prevent cerumen from plugging passages for acoustical energy to the tympanic membrane and to facilitate the removal of cerumen from the transducer by the user. A casing has a hollow tubular wall, and diaphragm means is mounted to the casing near one end thereof, the casing being shaped for insertion in the ear to define a space generally bounded by the ear canal, the tympanic membrane and the diaphragm means. The diaphragm means has a flexible film surround, and stop means are provided to limit its movement inwardly of the casing. The transducer can be incorporated in or utilized as various hearing aids respectively adapted for different depths of insertion within the ear canal.

REFERENCES:
patent: 4739512 (1988-04-01), Hartl et al.
patent: 4800982 (1989-01-01), Carlson

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