Unrefereed conference proceedings (B3)

The effect of road traffic noise spectrum on sleep

List of Authors: Hongisto Valtteri, Myllyntausta Saana

Conference name: International Congress on Acoustics

Publisher: International Commission for Acoustics (ICA)

Publication year: 2019

Journal: International Congress on Acoustics

Book title *: Proceedings of the ICA 2019 and EAA EUROREGIO: 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019

Journal name in source: Proceedings of the International Congress on Acoustics

Title of series: International Congress on Acoustics

Volume number: 2019

ISBN: 978-3-939296-15-7

ISSN: 2226-7808

DOI: http://dx.doi.org/10.18154/RWTH-CONV-239570

URL: http://publications.rwth-aachen.de/record/769981


PURPOSE. Two façades having nominally equivalent sound insulation declaration, such as Rw+Ctr value, may have very different frequency behaviors leading to different spectrum of road traffic noise (RTN) indoors. Because spectrum affects annoyance of sound, spectrum may also affect sleep quality. Our purpose was to determine, how the spectrum of RTN affects sleep.

METHODS. Twenty-one participants slept three nights in a sleep laboratory in three different conditions: LF (low frequency prominence, 37 dB), HF (high frequency prominence, 37 dB), and Q (control, quiet, 19 dB). Conditions LF and HF were created by filtering an outdoor recording of RTN through two filters corresponding to two different sound insulation spectra but equal value of Rw+Ctr = 37 dB. Sleep quality wasmeasured both objectively (polysomnography) and subjectively (questionnaires).

RESULTS. Subjective sleep quality was worse in conditions LF and HF than in Q. Duration of slow wave sleep (deep sleep) was shorter in LF and HF than in Q. LF and HF did not differ from each other. After the experiment, most of the participants rated condition HF as the most disturbing for sleep.

CONCLUSIONS. High frequency RTN may be more adverse for sleep than low frequency RTN, but more research is needed.

Last updated on 2021-24-06 at 10:03