What is it about?
The paper demonstrates that specific classes of vehicles (i.e., heavy trucks, buses, trains, aircraft) can be spectrally fingerprinted from raw sound data and that their frequency ranges are linked to particle number concentration (PNC) as a measure of ultrafine particle (UFP) concentration in ambient air, mediated by meteorological conditions.
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Why is it important?
This paper hypothesizes there are correlations between transportation source noise frequencies and transportation-related emissions of ultrafine particles (UFP) and explores implications for environmental health and epidemiological studies.
Perspectives
We aim to characterize transportation noise exposure using multiple quantifiable features of recorded noise data – notably the frequency content, but also features such as modulation and spectral features, rather than solely overall audible acoustic energy measured as A-weighted (dBA) Sound Pressure Levels (SPL).
Douglas Leaffer
Tufts University
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This page is a summary of: Correlating transportation noise frequencies with ultrafine particulate emissions by source: Implications for environmental health studies, January 2017, Acoustical Society of America (ASA),
DOI: 10.1121/2.0000545.
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