Directional hearing aids

Details Directional hearing aids Directional hearing aids

1974-09-16

1976-03-23

Brown, Thomas W.

179107H, H04R 2502

Patent

active

039461688

ABSTRACT:
A miniature hearing aid unit to be fitted to and carried on a person's head; there being a directional microphone in the housing which has front and rear sound admitting openings to respectively supply sounds to the fore and aft ports of the directional microphone; the rear opening in the hearing aid housing being located significantly closer to the inner side of the housing than the forward opening so that the alignment between front and rear openings is at an oblique angle of approximately 20.degree. relative to the frontal direction.

REFERENCES:
patent: 3749853 (1973-07-01), Ely
patent: 3770911 (1973-11-01), Knowles
patent: 3777079 (1973-12-01), Fischer

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