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Case-study evaluation of a low and vegetated noise barrier in an urban public space
Stockholm University, Faculty of Social Sciences, Department of Psychology.
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2011 (English)In: Proceedings of Inter-Noise 2011, Osaka, Japan:: The Institute of Noise Control Engineering of Japan and the Acoustical Society of Japan , 2011Conference paper, Published paper (Other academic)
Abstract [en]

To improve the sound environment along a popular esplanade in Lyon, France, a 1 m high vegetated noise barrier was erected to protect against noise from an adjacent road. The barrier was made of a metallic structure, filled with a substrate on which 40 plants per square meter were grown on both sides. The effect of the barrier was evaluated by acoustic measurements conducted before and after the barrier was erected, as well as, by a questionnaire study in which pedestrians were asked to assess the sound environment both behind and at the side of the barrier. The barrier reduced the sound pressure level from about 67 to 62 dB (LAeq), at sitting height (1.2 m), 3.5 m from the roadside. Questionnaires responses (n = 349) from the same location showed that the barrier reduced road-traffic noise annoyance, and increased the overall quality of the sound environment by making it slightly calmer and slightly more pleasant. However, these effects were fairly small and the sound environment was still perceived as annoying by most of the respondents. Overall, the result thus suggested that the barrier made the sound environment better but not good. Further work will include detailed psychoacoustic analysis of the questionnaire data, as well as listening experiments using binaural recordings from the site.

Place, publisher, year, edition, pages
Osaka, Japan:: The Institute of Noise Control Engineering of Japan and the Acoustical Society of Japan , 2011.
Series
Proceedings of Inter-Noise 2011, ISSN 0105-175X
Keyword [en]
noise, barrier, annoyance
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:su:diva-70295OAI: oai:DiVA.org:su-70295DiVA: diva2:480306
Conference
Inter-Noise 2011
Note

Proceedings available on CD-ROM.

Available from: 2012-01-19 Created: 2012-01-19 Last updated: 2012-10-12Bibliographically approved

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