The effect of atmospheric conditions on sound propagation and its impact on the outdoor sound field control

Diego Caviedes Nozal, Franz Maria Heuchel, Finn T. Agerkvist, Jonas Brunskog

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    Abstract

    The performance of active sound field control solutions is directly dependent on the knowledge of the acoustic transfer functions between the control loudspeakers
    and control areas. Outdoors, the propagation of sound and thus these transfer functions are affected by atmospheric conditions and their variation. In this work we experimentally investigate the effect of wind and temperature changes on transfer functions. We present the results of a measurement campaign, where transfer functions and weather data were gathered every 30 minutes for a time period of a week. The results show the impact of wind (up to 8 m/s) and temperature (−2C to 6C) variations on the sound propagation over distances of around 300 m. We discuss the results in relation to the outdoor control of sound.
    Original languageEnglish
    Title of host publicationProceedings of internoise 2019
    Number of pages10
    PublisherInternational Institute of Noise Control Engineering
    Publication date2019
    ISBN (Print)978-84-87985-31-7
    Publication statusPublished - 2019
    Event48th International Congress and Exhibition on Noise Control Engineering - Palacio Municipal de Congresos de Madrid, Madrid, Spain
    Duration: 16 Jun 201919 Jun 2019
    Conference number: 48
    https://internoise2019.org/

    Conference

    Conference48th International Congress and Exhibition on Noise Control Engineering
    Number48
    LocationPalacio Municipal de Congresos de Madrid
    Country/TerritorySpain
    CityMadrid
    Period16/06/201919/06/2019
    Internet address

    Keywords

    • Outdoor sound propagation
    • Active control of sound

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