Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear
Patent
1994-05-02
1997-02-18
Coles, Sr., Edward L.
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
Adjacent ear
381 94, A61F 1106
Patent
active
056048130
ABSTRACT:
This invention relates to the various features of a headset design that utilizes active noise cancellation. This particular design has been developed to work with radio communication systems, but many features are applicable to headsets designed solely for ear protection. The unique design features of the invention allow for uninterrupted communication capability with active noise cancellation. The design also provides it own built in rechargeable power supply that is easily removed for recharging.
REFERENCES:
patent: 3906160 (1975-09-01), Nakamura et al.
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patent: 4622440 (1986-11-01), Slavin
patent: 4644581 (1987-02-01), Sapiejewski
patent: 4985925 (1991-01-01), Langberg
patent: 4987592 (1991-01-01), Flagg
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patent: 5361304 (1994-11-01), Jones et al.
Burke Michael J.
Evans Robert D.
Hoge William J.
Roeder John
Tye George W.
Coles Sr. Edward L.
DeJoseph Daniel
Grant II Jerome
Noise Cancellation Technologies, Inc.
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