Active control of radiated sound power from a baffled, rectangular panel

Jakob Mørkholt

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Active control of radiated sound power from a rectangular baffled panel by minimisation of an accurate power estimate, using piezoceramic actuators, has been investigated. Computer simulations have shown that minimising a power estimate obtained by discretised integration of the far field intensity with an array of eleven microphones in front of the panel, is very close to minimising the actual radiated sound power. Practical experiments where such an array estimate has been minimised using the filtered X LMS algorithm have shown that substantial reductions of radiated sound power can be obtained over a broad frequency range using few piezoceramic actuators, provided that an accurate estimate of the sound power is available for minimisation.
    Original languageEnglish
    Title of host publicationInter-Noise 96 - Proceedings
    Place of PublicationSt Albans
    PublisherThe Institute of Acoustics
    Publication date1996
    Pages1211-1214
    Publication statusPublished - 1996
    EventThe 1996 International Congress on Noise Control Engineering - Liverpool, United Kingdom
    Duration: 30 Jul 19962 Aug 1996

    Conference

    ConferenceThe 1996 International Congress on Noise Control Engineering
    CountryUnited Kingdom
    CityLiverpool
    Period30/07/199602/08/1996

    Cite this

    Mørkholt, J. (1996). Active control of radiated sound power from a baffled, rectangular panel. In Inter-Noise 96 - Proceedings (pp. 1211-1214). The Institute of Acoustics.