Low-noise transmitting receiving earset

Details Low-noise transmitting receiving earset Low-noise transmitting receiving earset

2005-08-26

2008-11-04

Kuntz, Curtis (Department: 2614)

Telephonic communications

Terminal

Housing or housing component

C381S071600, C381S380000

Reexamination Certificate

active

07447308

ABSTRACT:
A low-noise transmitting receiving earset includes a housing covered with a grille, a speaker mounted inside the housing adjacent to the grille and facing the back side of the housing, a first microphone mounted in the hub of the grille and facing the front side of the housing for picking up resonant sound waves from the external auditory canal of the user's ear, and a second microphone mounted inside the housing remote from the speaker for receiving voices directly from the user's mouth.

REFERENCES:
patent: 5182774 (1993-01-01), Bourk
patent: 6415034 (2002-07-01), Hietanen
patent: 7362876 (2008-04-01), Tsai
patent: 2008/0037801 (2008-02-01), Alves et al.

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