Identification and control of acoustic radiation modes

J. van Amerongen (Editor), Arthur P. Berkhoff, Jan B. Jonker (Editor), Paulus P.L. Regtien (Editor), Stefano Stramigioli (Editor)

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    A formulation is given of reduced-order acoustic radiation sensors and reduced-order actuators for broadband sound fields. Methods are presented to determine these descriptions from measured data, and their application in systems for broadband active noise control is discussed. One application area is the reduction of sound radiated from plates with structural actuators and structural sensors, using measured or modeled versions of the most efficiently radiating patterns of a vibrating body, the so-called radiation modes. The second application of the radiation mode theory is in active noise barriers for the reduction of traffic noise. Without special precautions most of these systems suffer from spillover; a technique is given to arrive at good reductions at the error sensors with reduced spillover.
    Original languageUndefined
    Number of pages10
    Publication statusPublished - 24 Jun 2002
    Event8th Mechatronics Forum International Conference, MECHATRONICS 2002 - Enschede, Netherlands
    Duration: 24 Jun 200226 Jun 2002
    Conference number: 8


    Conference8th Mechatronics Forum International Conference, MECHATRONICS 2002
    Abbreviated titleMechatronics 2002


    • Reciprocity
    • radiation modes
    • Active noise and vibration control
    • EWI-19634
    • IR-76020

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