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    Impacts of Low Frequency Noise Exposure on Well-Being: A Case-Study From Portugal

    TitleImpacts of Low Frequency Noise Exposure on Well-Being: A Case-Study From Portugal
    Publication TypePapers in International Journals
    Year of Publication2018
    AuthorsAlves J. A., Silva L. T., and Remoaldo P. C.
    Abstract

    The aim of this article is to assess the impacts of low frequency noise, emitted by high-voltage lines and power poles, on the
    perception of discomfort, comparing two different groups of inhabitants (exposed and unexposed groups) in two areas in the Northwest of
    Portugal. It proposes a new oriented methodology to assess discomfort due to the low frequency noise. Materials and Methods: Two
    predominantly urban areas were used to test the methodology: an “exposed” area with a high presence of the source under study and an
    “unexposed” area without records of power transmission lines. The research developed included measuring sound levels (in frequency bands
    from 10 to 160 Hz) with the help of a sound level meter in the two selected urban areas. Results: The real sound coming from the source was
    recorded and reproduced in an audiometric testing booth to determine the hearing threshold and discomfort of the volunteers. Using the criteria
    curve developed by DEFRA (Department for Environment, Food & Rural Affairs/University of Salford) in 2011, the results reveal that the
    sound levels recorded for the “exposed” group were higher than that for the “unexposed” group. The first recording showed an average of
    68.9 dB and the second 64.6 dB, resulting in a significant difference of 4.3 dB between the two groups. After an attempt to isolate the source,
    the difference was 5.6 dB. Regarding the adapted audiometric tests, the real sound was used, which was collected 5mbetween the receiver and
    the source. Conclusion: These results provide support that at this distance the noise was considered annoying.

    JournalNoise & Health
    Volume20
    Issue95
    Pagination131-145
    Date Published2018-08-31
    PublisherWolters Kluwer - Medknow
    ISSN1463-1741
    DOIhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6122264/
    URLwww.noiseandhealth.org
    Keywordsaudiometric testing, human well-being, noise discomfort, noise pollution, power poles and power lines
    RightsrestrictedAccess
    Peer reviewedyes
    Statuspublished
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    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 24 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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