Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure

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    Abstract

    This paper presents a modified loudspeaker source for decentralized feedback cavity control in a double panel structure to reduce the noise transmission. The double panel structure con-sists of two panels with air in between and offers the advantages of low weight, low sound transmission at high frequencies, and thermal insulation. The main issues of the double panel structure are the resonance of the cavity and the high noise transmission at low frequencies. Many papers have discussed applying active structural acoustic control to the panels or active noise control to the cavity. In our previous study, we considered the resonance of the panels and the cavity simultaneously and numerically compared various decentralized structural and cavity feedback control strategies basing on identical control stability margins. Cavity control by loudspeakers, which are modified to operate as incident pressure sources, was found to-provide the largest noise reduction. The incident pressure source loudspeaker can be realized by using a dynamic loudspeaker, a microphone, and a velocity sensor with a feedforward controller. In this paper, experimental results of a one dimensional realization with a feed-forward controller are presented.
    Original languageEnglish
    Title of host publicationProceedings of the 20th International Congress on Sound and Vibration
    EditorsMalcolm J. Crocker, Marek Pawelczyk, Boonchoat Paosawatyanyong
    PublisherInternational Institute of Acoustics and Vibration (IIAV)
    Pages1-7
    Number of pages7
    ISBN (Print)978-616-551-682-2
    Publication statusPublished - 7 Jul 2013
    Event20th International Congress on Sound and Vibration, ICSV 2013 - Bangkok, Thailand
    Duration: 7 Jul 201311 Jul 2013
    Conference number: 20
    https://www.iiav.org/icsv20/

    Publication series

    Name
    PublisherInternational Institute of Acoustics and Vibration, IIAV
    ISSN (Print)2329-3675

    Conference

    Conference20th International Congress on Sound and Vibration, ICSV 2013
    Abbreviated titleICSV
    CountryThailand
    CityBangkok
    Period7/07/1311/07/13
    Internet address

    Fingerprint

    loudspeakers
    noise reduction
    cavities
    controllers
    control stability
    thermal insulation
    low weight
    sound transmission
    microphones
    feedback control
    margins
    low frequencies
    acoustics
    sensors
    air

    Keywords

    • EWI-23698
    • IR-87241
    • METIS-302540

    Cite this

    Ho, J., & Berkhoff, A. P. (2013). Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure. In M. J. Crocker, M. Pawelczyk, & B. Paosawatyanyong (Eds.), Proceedings of the 20th International Congress on Sound and Vibration (pp. 1-7). International Institute of Acoustics and Vibration (IIAV).
    Ho, J. ; Berkhoff, Arthur P. / Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure. Proceedings of the 20th International Congress on Sound and Vibration. editor / Malcolm J. Crocker ; Marek Pawelczyk ; Boonchoat Paosawatyanyong. International Institute of Acoustics and Vibration (IIAV), 2013. pp. 1-7
    @inproceedings{d2824ba19a314d53ba12922c39536618,
    title = "Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure",
    abstract = "This paper presents a modified loudspeaker source for decentralized feedback cavity control in a double panel structure to reduce the noise transmission. The double panel structure con-sists of two panels with air in between and offers the advantages of low weight, low sound transmission at high frequencies, and thermal insulation. The main issues of the double panel structure are the resonance of the cavity and the high noise transmission at low frequencies. Many papers have discussed applying active structural acoustic control to the panels or active noise control to the cavity. In our previous study, we considered the resonance of the panels and the cavity simultaneously and numerically compared various decentralized structural and cavity feedback control strategies basing on identical control stability margins. Cavity control by loudspeakers, which are modified to operate as incident pressure sources, was found to-provide the largest noise reduction. The incident pressure source loudspeaker can be realized by using a dynamic loudspeaker, a microphone, and a velocity sensor with a feedforward controller. In this paper, experimental results of a one dimensional realization with a feed-forward controller are presented.",
    keywords = "EWI-23698, IR-87241, METIS-302540",
    author = "J. Ho and Berkhoff, {Arthur P.}",
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    year = "2013",
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    language = "English",
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    publisher = "International Institute of Acoustics and Vibration (IIAV)",
    pages = "1--7",
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    Ho, J & Berkhoff, AP 2013, Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure. in MJ Crocker, M Pawelczyk & B Paosawatyanyong (eds), Proceedings of the 20th International Congress on Sound and Vibration. International Institute of Acoustics and Vibration (IIAV), pp. 1-7, 20th International Congress on Sound and Vibration, ICSV 2013, Bangkok, Thailand, 7/07/13.

    Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure. / Ho, J.; Berkhoff, Arthur P.

    Proceedings of the 20th International Congress on Sound and Vibration. ed. / Malcolm J. Crocker; Marek Pawelczyk; Boonchoat Paosawatyanyong. International Institute of Acoustics and Vibration (IIAV), 2013. p. 1-7.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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    T1 - Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure

    AU - Ho, J.

    AU - Berkhoff, Arthur P.

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    PY - 2013/7/7

    Y1 - 2013/7/7

    N2 - This paper presents a modified loudspeaker source for decentralized feedback cavity control in a double panel structure to reduce the noise transmission. The double panel structure con-sists of two panels with air in between and offers the advantages of low weight, low sound transmission at high frequencies, and thermal insulation. The main issues of the double panel structure are the resonance of the cavity and the high noise transmission at low frequencies. Many papers have discussed applying active structural acoustic control to the panels or active noise control to the cavity. In our previous study, we considered the resonance of the panels and the cavity simultaneously and numerically compared various decentralized structural and cavity feedback control strategies basing on identical control stability margins. Cavity control by loudspeakers, which are modified to operate as incident pressure sources, was found to-provide the largest noise reduction. The incident pressure source loudspeaker can be realized by using a dynamic loudspeaker, a microphone, and a velocity sensor with a feedforward controller. In this paper, experimental results of a one dimensional realization with a feed-forward controller are presented.

    AB - This paper presents a modified loudspeaker source for decentralized feedback cavity control in a double panel structure to reduce the noise transmission. The double panel structure con-sists of two panels with air in between and offers the advantages of low weight, low sound transmission at high frequencies, and thermal insulation. The main issues of the double panel structure are the resonance of the cavity and the high noise transmission at low frequencies. Many papers have discussed applying active structural acoustic control to the panels or active noise control to the cavity. In our previous study, we considered the resonance of the panels and the cavity simultaneously and numerically compared various decentralized structural and cavity feedback control strategies basing on identical control stability margins. Cavity control by loudspeakers, which are modified to operate as incident pressure sources, was found to-provide the largest noise reduction. The incident pressure source loudspeaker can be realized by using a dynamic loudspeaker, a microphone, and a velocity sensor with a feedforward controller. In this paper, experimental results of a one dimensional realization with a feed-forward controller are presented.

    KW - EWI-23698

    KW - IR-87241

    KW - METIS-302540

    M3 - Conference contribution

    SN - 978-616-551-682-2

    SP - 1

    EP - 7

    BT - Proceedings of the 20th International Congress on Sound and Vibration

    A2 - Crocker, Malcolm J.

    A2 - Pawelczyk, Marek

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    PB - International Institute of Acoustics and Vibration (IIAV)

    ER -

    Ho J, Berkhoff AP. Development of dynamic loudspeakers modified as incident pressure sources for noise reduction in a double panel structure. In Crocker MJ, Pawelczyk M, Paosawatyanyong B, editors, Proceedings of the 20th International Congress on Sound and Vibration. International Institute of Acoustics and Vibration (IIAV). 2013. p. 1-7