Headset having double-coil earphone

Details Headset having double-coil earphone Headset having double-coil earphone

1977-07-27

1979-01-02

Cooper, William C.

1791155DV, 179156A, H04M 119

Patent

active

041328612

ABSTRACT:
A headset for use in a voice communication system which provides a common audio signal, such as a radio receiver signal, to a plurality of such headsets. The headset includes an earphone having a double voice coil and an ambient sound microphone arranged to receive sounds from the surrounding environment. One of the voice coils is coupled to the common audio signal, while the other coil receives a signal from the ambient sound microphone to permit simultaneous monitoring of the two signals while preventing undesirable signal interaction.

REFERENCES:
patent: 2946862 (1960-07-01), Wadsworth et al.
patent: 3098121 (1963-07-01), Wadsworth

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