Two-way acoustic communication through the ear with acoustic and

Details Two-way acoustic communication through the ear with acoustic and Two-way acoustic communication through the ear with acoustic and

1975-07-07

1976-11-30

Stellar, George G.

179102, 179107E, 179182R, H04R 110, H04M 119

Patent

active

039951138

ABSTRACT:
Acoustic communication permitting reception of acoustic signals by converting the transmitted electric signals into acoustic signals by means of an apparatus to be simply inserted in the ear hole of a person and simultaneously permitting transmission of the voice of said person by converting the same into electric signals by means of said apparatus when inserted in the ear hole. The apparatus includes means including a leak hole and means including a compensating hole in the main body of the apparatus, the two holes cooperating to cancel the effect of ambient sound, when the device is in use.

REFERENCES:
patent: 1455818 (1923-05-01), Steinberger
patent: 2390794 (1945-12-01), Knight
patent: 2535063 (1950-12-01), Halstead
patent: 2819340 (1958-01-01), Brody
patent: 2964596 (1960-12-01), Christensen
patent: 3189690 (1965-06-01), Millett
patent: 3798393 (1974-03-01), Gorike
patent: 3819860 (1974-06-01), Miller

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