반사파가 있는 관내의 능동 소음제어Active Noise Control in a Duct With Reflected Wave

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dc.contributor.author오상헌ko
dc.contributor.author김양한ko
dc.date.accessioned2013-02-27T05:35:22Z-
dc.date.available2013-02-27T05:35:22Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued1994-02-
dc.identifier.citation한국소음진동공학회논문집, v.4, no.2, pp.187 - 198-
dc.identifier.issn1598-2785-
dc.identifier.urihttp://hdl.handle.net/10203/66752-
dc.description.abstractThis study is to describe the effects of the duct termination conditions conditions upon the active noise attenuation system. The adaptive filtering algorithm using FIR filter is implemented for duct noise attenuation. To avoid the instability caused by the acoustic feedback, two methods are considered. One is to use a compensating FIR filter. The other is to utilize uni-directional detecting microphone and uni-directional control speaker. Experimental results show that the reflections of sound from duct terminations greatly reduce the performance of ANC system. The directionality of detecting microphone and control speaker is a major factor to decide ANC performance. When there are some reflections from both duct terminations, the noise attenuation using finite FIR filter is not enough to model the duct plant. Especially, the reflection from the upstream termination reduces the noise attenuation in the frequencies related to the distance between control speaker and upstream termination. The performance of the noise attenuation is found to be largely enhanced by using uni-directional coupler, both on detecting microphone and control speaker, even if the duct system has an arbitrary termination conditions.-
dc.languageKorean-
dc.publisher한국소음진동공학회-
dc.title반사파가 있는 관내의 능동 소음제어-
dc.title.alternativeActive Noise Control in a Duct With Reflected Wave-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume4-
dc.citation.issue2-
dc.citation.beginningpage187-
dc.citation.endingpage198-
dc.citation.publicationname한국소음진동공학회논문집-
dc.contributor.localauthor김양한-
dc.contributor.nonIdAuthor오상헌-
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ME-Journal Papers(저널논문)
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