Combined receiver and ear-canal microphone assembly for a...

Details Combined receiver and ear-canal microphone assembly for a... Combined receiver and ear-canal microphone assembly for a...

2011-08-09

2011-08-09

Tsang, Fan (Department: 2614)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

C381S329000

Reexamination Certificate

active

07995782

ABSTRACT:
A sound tube having two passages affords a compact arrangement for a combined receiver and ear-canal microphone assembly. The ear-canal microphone is positioned in line with the receiver but above the receiver's output port, and the sound tube connects both with the ear canal.

REFERENCES:
patent: 3763333 (1973-10-01), Lichowsky
patent: 5033090 (1991-07-01), Weinrich
patent: 5195139 (1993-03-01), Gauthier
patent: 5201006 (1993-04-01), Weinrich

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