Sound directivity control using striped panel. Loudspeaker

Marko Antila, Jari Kataja, Vesa Välimäki

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


    The sound radiation properties of a striped panel loudspeaker are modified in this study. The panel loudspeaker is based on Electromechanical film (EMFi) and consists of 14 individual sound radiating areas in form of narrow stripes. Each stripe can be driven individually so that the panel radiation pattern can be modified and it can be used as a directivity-controlled sound source in audio applications. The performance of the panel was analyzed using an acoustical boundary element method (BEM) model. For real-time directivity control, an algorithm was developed to process the input signals to gain appropriate radiation patterns. The measurements carried out in anechoic conditions were used to verify that the striped EMFi panel operates according to the simulations and that it produces the desired directivity pattern.
    Original languageEnglish
    Title of host publicationProceedings of 110th AES Convention
    PublisherAudio Engineering Society (AES)
    Number of pages8
    Publication statusPublished - 2001
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventAES 110th Convention - Amsterdam, Netherlands
    Duration: 12 May 200115 May 2001


    ConferenceAES 110th Convention


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