The Norwegian facade insulation study includes one pre-intervention and two post-intervention surveys. The facade-insulating measures reduced indoor noise levels by 7 dB on average. Before the intervention, 43% of the respondents were highly annoyed by noise. Half a year after the intervention, the proportion of respondents who were highly annoyed by road traffic noise had been significantly reduced to 15%. The second post-intervention study (2 yr after the first post-intervention study) showed that the proportion of highly annoyed respondents had not changed since the first post-intervention study. The reduction in the respondents' self-reported sleep disturbances (due to traffic noise) also remained relatively stable from the first to the second post-intervention study. In the control group, there were no statistically significant differences in annoyance between the pre-intervention and the two post-intervention studies. Previous studies of traffic changes have reported that people “overreact” to noise changes. This study indicated that when considering a receiver measure, such as facade insulation, the effect of reducing indoor noise levels could be predicted from exposure-response curves based on previous studies. Thus no evidence of an “overreaction” was found.
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June 2013
June 05 2013
Long-term effects of noise reduction measures on noise annoyance and sleep disturbance: The Norwegian facade insulation study
Astrid H. Amundsen;
Astrid H. Amundsen
a)
Institute of Transport Economics (TOI)
, Gaustadalèen 21, 0349 Oslo, Norway
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Ronny Klæboe;
Ronny Klæboe
Institute of Transport Economics (TOI)
, Gaustadalèen 21, 0349 Oslo, Norway
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Gunn Marit Aasvang
Gunn Marit Aasvang
Norwegian Institute of Public Health
, P.O. Box 4404 Nydalen, 0403 Oslo, Norway
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a)
Author to whom correspondence should be addressed. Electronic mail: astrid.amundsen@toi.no
J. Acoust. Soc. Am. 133, 3921–3928 (2013)
Article history
Received:
December 19 2012
Accepted:
April 02 2013
Citation
Astrid H. Amundsen, Ronny Klæboe, Gunn Marit Aasvang; Long-term effects of noise reduction measures on noise annoyance and sleep disturbance: The Norwegian facade insulation study. J. Acoust. Soc. Am. 1 June 2013; 133 (6): 3921–3928. https://doi.org/10.1121/1.4802824
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