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Loudness of fountain and road traffic sounds in a city park
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
2009 (English)In: 16th International Congress on Sound and Vibration 2009, ICSV 2009, 2009, 1270-1276 p.Conference paper, Published paper (Refereed)
Abstract [en]

Auditory masking of unwanted sounds by wanted sounds has been suggested as an approach to soundscape improvement. Anecdotal evidence exists on successful applications, for instance use of fountain sounds for masking road traffic noise in urban parks. However, basic research on auditory masking of environmental sounds is lacking. Therefore, we conducted two listening experiments on auditory masking, using binaural recordings from a city park in Stockholm exposed to traffic noise from a main road and sound from a large fountain located in the centre of the park. In Experiment 1, 12 listeners assessed the loudness of road traffic noise and fountain sounds from recordings at various distances from road, with or without the fountain turned on. In Experiment 2, the same listeners assessed loudness of manipulated sound levels of singular or combined road traffic or fountain sounds. The results of Experiment 1 showed that the fountain sound reduced the loudness of road traffic noise close to the fountain, and that the fountain sound was equally loud or louder than the road traffic noise in a region 20-30 m around the fountain. This suggests that fountain sounds may add to the quality of city park soundscape by reducing the loudness of the (presumably unwanted) traffic noise. On the other hand, results from both experiments showed that road traffic noise was harder to mask than fountain sound. Furthermore, Experiment 2 showed that partial loudness of both sources was considerably less than expected from a model of energetic masking. This suggests that informational masking due to target-masker similarity may reduce the overall masking effect of environmental sounds.

Place, publisher, year, edition, pages
2009. 1270-1276 p.
Keyword [en]
Anecdotal evidences, Auditory masking, Energetic masking, Environmental sounds, Informational masking, Main roads, Partial loudness, Road traffic, Road traffic noise, Sound level, Soundscapes, Stockholm, Traffic noise, Urban parks, Acoustic noise, Audio recordings, Fountains, Noise pollution, Roads and streets, Experiments
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-151996Scopus ID: 2-s2.0-84871460232ISBN: 978-161567736-8 (print)OAI: oai:DiVA.org:kth-151996DiVA: diva2:749077
Conference
16th International Congress on Sound and Vibration 2009, ICSV 2009, 5 July 2009 through 9 July 2009, Krakow, Poland
Note

QC 20140923

Available from: 2014-09-23 Created: 2014-09-23 Last updated: 2014-09-23Bibliographically approved

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