A new hybrid passive/active noise absorption system

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dc.contributorVirginia Tech. Department of Mechanical Engineering. Vibration and Acoustics Laboratoriesen
dc.contributor.authorBeyene, Samsonen
dc.contributor.authorBurdisso, Ricardo A.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:22Zen
dc.date.available2015-05-27T19:50:22Zen
dc.date.issued1997-03-01en
dc.description.abstractA new hybrid passive/active system is developed for sound absorption over a wide frequency range. The system is comprised of a layer of absorbing material positioned at a distance from an active wall, leaving an air space. The motion of the active wall is based on a new control approach which consists,of the minimization of the reflected wave within the airspace which modifies the layer's back surface impedance so as to match the characteristic impedance of air. This technique is referred here as inducing an impedance-matching condition. Both numerical and experimental results of such a system are presented for normally incident planar waves. The hybrid passive/active system results in a high absorption coefficient of .8-1.0 over the frequency range 100-2000 Hz and is insensitive to system parameters such as air space depth and absorbing layer thickness. (C) 1997 Acoustical Society of America.en
dc.description.notesBeyene, S., & Burdisso, R. A. (1997). A new hybrid passive/active noise absorption system. Journal of the Acoustical Society of America, 101(3), 1512-1515. doi: 10.1121/1.418105en
dc.format.extent4 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBeyene, S., & Burdisso, R. A. (1997). A new hybrid passive/active noise absorption system. Journal of the Acoustical Society of America, 101(3), 1512-1515. doi: 10.1121/1.418105en
dc.identifier.doihttps://doi.org/10.1121/1.418105en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52678en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/101/3/10.1121/1.418105en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAcoustic absorptionen
dc.subjectAcoustic wavesen
dc.subjectAbsorption coefficienten
dc.subjectAcoustic noiseen
dc.subjectSurface acoustic wavesen
dc.titleA new hybrid passive/active noise absorption systemen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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