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Glenn E Warnaka, John M Zalas: Active attenuation of noise in a closed structure. Lord Corporation, Wood Herron & Evans, December 31, 1985: US04562589 (61 worldwide citation)

This invention is directed to a system for the active acoustic attenuation of noise produced in the interior of an enclosure by a source of noise which in one aspect comprises input sensing operable to sense the source noise to be attenuated, cancellor adapted to produce noise 180.degree. out of pha ...


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Warnaka Glenn E, Zalas John M: Abattement actif du bruit dans un volume ferme, Active attenuation of noise in a closed structure. Lord Corporation, OGILVY RENAULT SENCRLSRL, November 12, 1985: CA1196579

ACTIVE ATTENUATION OF NOISE IN A CLOSED STRUCTURE Abstract This invention is directed to a system for the activeacoustic attenuation of noise produced in the interior of anenclosure by a source of noise which in one aspect comprisesinput sensing operable to sense the source noise to be atten-uated, ...