Noise cancellation system and headphone therefor

Details Noise cancellation system and headphone therefor Noise cancellation system and headphone therefor

2003-06-26

2009-02-10

Mei, Xu (Department: 2615)

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Adjacent ear

C381S072000

Reexamination Certificate

active

07489785

ABSTRACT:
A noise cancellation system includes a headphone having a sound transducer and a headphone speaker. Noise cancellation circuitry is provided remote from the headphone and supplies the headphone speaker and is supplied from the sound transducer. A filter normalizes the output from the sound transducer of the headphone to the noise cancellation circuitry.

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patent: WO 03/030145 (2003-04-01), None
patent: WO 03/030146 (2003-04-01), None

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