Pilot study on perceived sleep acceptability of low-frequency, amplitude modulated tonal noise

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    Abstract

    The global expansion of wind farm facilities has been associated with community complaints regarding sleep disturbance. This may be related to the presence of amplitude modulation (AM) in wind turbine noise (WTN), which has been shown to result in increased annoyance. However, at present, it is unknown whether acceptability for sleep is judged differently to annoyance or if AM may be more problematic for sleep than other noise types. Previous studies have also focused predominantly on 'swish' noise rather than tonal AM, where the latter has been more consistently measured at several wind farms in South Australia at distances greater than 1 km. Therefore, this study investigated the perceived sleep acceptability of WTN containing low-frequency tonal AM through listening tests involving 13 participants. A total of 13 noise stimuli were synthesised based on real recordings of WTN. The tonal audibility and AM depth were varied within a range relevant to the AM depth measured in field recordings. Participant responses were highly variable, but in self-reported noise-sensitive individuals, an increase in the AM depth at a tonal audibility of 12 dB(A) was associated with lower acceptability for sleep.

    Original languageEnglish
    Title of host publicationProceedings of the 23rd International Congress on Acoustics
    Subtitle of host publicationIntegrating 4th EAA Euroregio 2019
    EditorsMartin Ochmann, Vorlander Michael, Janina Fels
    Place of PublicationBerlin, Germany
    PublisherInternational Commission for Acoustics (ICA)
    Pages1447-1454
    Number of pages8
    ISBN (Electronic)9783939296157
    DOIs
    Publication statusPublished - 10 Sep 2019
    Event23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
    Duration: 9 Sep 201913 Sep 2019
    Conference number: 23

    Publication series

    NameProceedings of the International Congress on Acoustics
    Volume2019-September
    ISSN (Print)2226-7808
    ISSN (Electronic)2415-1599

    Conference

    Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
    CountryGermany
    CityAachen
    Period9/09/1913/09/19

    Keywords

    • Amplitude modulation
    • Low-frequency noise
    • Sleep
    • Tonal noise
    • Wind farm noise

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