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noise cancellation

   Also found in: Wikipedia 0.04 sec.

(1) The elimination of unwanted signals in an electronic circuit. See noise and dynamic noise reduction.

(2) The elimination of unwanted noise in the environment using noise cancelling headphones. A microphone in the headphones picks up external sound and creates an inverse signal to the speakers in order to cancel it. The headphones can also be used to listen to audio from a CD, DVD or other source at the same time. See echo cancellation.
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The ATS6000MM SoundClear Multi-Mic noise cancellation and hands-free audio processing software from Acoustic Technologies will allow CSR's BlueCore-Multimedia customers to integrate advanced noise cancellation and enhanced speech intelligibility into products such as Bluetooth headsets, automotive navigation, hands-free systems, and mobile handsets.
CSR Adds Noise Cancellation and Enhanced Speech Intelligibility to ... by Business Wire
NEW YORK -- Quellan, a leader in analog noise cancellation devices, today showcased its revolutionary technology and confirmed once again the company's vast potential for financial growth.
Quellan Presents at 9th Annual Needham & Co. Growth Stock Conference by Business Wire
maker of the world's top-selling notebook computer cases and accessories, announced today the availability of its new Travel-Ease Active Noise Cancellation Headphones.
Targus Tunes out Unwanted Sound with Travel-Ease Active Noise ... by Business Wire
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