A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 11/14 (2006.01) G10K 11/16 (2006.01) G10K 11/178 (2006.01) H04R 5/033 (2006.01)
Patent
CA 2134322
In the area of the active noise cancelation headsets, the noisy environment often encountered in the link with communication systems causes lack of intelligibility on the outward communications path. Consequently another in-wire cancellation channel to enhance the intelligibility is required. This additional processing channel adds to the cost of the headset. The invention uses residual microphones to reproduce the sound that remains in the ear after cancellation so that the controller can make further adjustments through filter and LMS adapter to the anti-noise signal.
Dans le domaine des casques éliminateurs de bruits actifs, le bruit souvent présent sur les liaisons avec des systèmes de communication compromet l'intelligibilité des communications de départ. Pour améliorer la situation, il faut donc un canal d'élimination intégré supplémentaire, lequel augmente le coût du casque. L'invention utilise des microphones résiduels pour reproduire le son qui demeure audible après suppression du bruit, ce qui permet au contrôleur d'effectuer d'autres réglages du signal anti-bruit par filtre et adaptateur LMS.
Claybaugh David
Denenberg Jeffrey N.
Kirby Eades Gale Baker
Noise Cancellation Technologies Inc.
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