Full-scale outdoor concert adaptive sound field control

Jonas Brunskog, Franz Maria Heuchel, Diego Caviedes Nozal, Minho Song, Finn T. Agerkvist, Efren Fernandez Grande, Enrico Gallo

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    Outdoor musical events in urban environments is of large cultural importance, but is also a source of noise, especially for non-participating neighbors. In an attempt to solve this, an Adaptive Sound Field Control (ASFC) system is under development. The purpose is to mitigate low frequency noise annoyance and simultaneously enhance the musical experience of the audience. The system uses a secondary array of loudspeakers, canceling out the sound in a dark zone. To do this, accurate estimates of the transfer function between the loudspeakers and the dark zone is necessary. A static version of the system has been tested in three events: a controlled pre-test, the KappaFutur Festival in Turino, and Tivoli in Copenhagen. These deployments are reported and discussed, with special focus on the KappaFutur Festival, where noise measurements where conducted in the neighborhood, supplementing the insertion loss measurement the ASFC. The performance of the ASFC system is shown to strongly depend on the complexity of the setting. In the final stage, the system needs to be adaptive in order to adjust for changing climate conditions. The adaptive parts of the system is under development, and will be tested in a series of events in 2019.
    Original languageEnglish
    Title of host publicationProceedings of 23rd International Congress on Acoustics
    PublisherGerman Acoustical Society (DEGA)
    Publication date2019
    ISBN (Print)978-3-939296-15-7
    Publication statusPublished - 2019
    Event23rd International Congress on Acoustics - Eurogress, Aachen , Germany
    Duration: 9 Sept 201913 Sept 2019


    Conference23rd International Congress on Acoustics
    Internet address


    • Sound field control
    • Outdoor concerts
    • IoT


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