G - Physics – 10 – K
Patent
G - Physics
10
K
G10K 11/175 (2006.01) F01N 1/06 (2006.01) G10K 11/178 (2006.01)
Patent
CA 2166282
An active sound damper for compensating the interference noise radiated by an interference source through an exit aperture comprises a loudspeaker to give a compensating sound in such a way that the two sound fields of the interference noise and the compensating sound weaken or cancel each other through mutual interference. The longitudinal axis of the loudspeaker is arranged approximately concentrically with the centre of the exit aperture and its loudspeaker diaphragm generating the compensating sound radially surrounds the exit aperture.
Un atténuateur de bruit actif (1) permettant la compensation du bruit parasite rayonné par une source de bruit parasite à travers une ouverture de rayonnement (13) contient un haut-parleur (2) pour le rayonnement d'un bruit de compensation de telle sorte que les deux champs sonores du bruit parasite et du bruit de compensation s'affaiblisssent ou se suppriment mutuellement par interférence. Le haut-parleur (2) est disposé de telle sorte que son axe longitudinal soit sensiblement concentrique par rapport au centre de l'ouverture de rayonnement (13) et entoure radialement l'ouverture de rayonnement (13) avec sa membrane (4) qui génère le bruit de compensation.
Leistritz Ag & Co. Abgastechnik
Marks & Clerk
LandOfFree
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