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Hornikx, Maarten C JORCID iD iconorcid.org/0000-0002-8343-6613
Publications (2 of 2) Show all publications
Wei, W., Botteldooren, D., Renterghem, T. V., Hornikx, M. C., Forssén, J., Salomons, E. M. & Ögren, M. (2015). Erratum: Urban background noise mapping: The general model (Acta Acustica united with Acustica (2014) 100 (1098-1111) DOI:10.3813/AAA.918789). Acta Acoustica united with Acustica, 101(1)
Open this publication in new window or tab >>Erratum: Urban background noise mapping: The general model (Acta Acustica united with Acustica (2014) 100 (1098-1111) DOI:10.3813/AAA.918789)
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2015 (English)In: Acta Acoustica united with Acustica, ISSN 1610-1928, E-ISSN 1861-9959, Vol. 101, no 1Article in journal (Refereed) Published
Keywords
Noise, Dwelling, Noise level, Mathematical model, Prediction, Surface, Reflection
National Category
Fluid Mechanics and Acoustics
Research subject
10 Road: Transport, society, policy and planning, 15 Road: Environment
Identifiers
urn:nbn:se:vti:diva-9304 (URN)10.3813/AAA.918818 (DOI)000348020800021 ()2-s2.0-84919754467 (Scopus ID)
Available from: 2016-05-25 Created: 2016-03-02 Last updated: 2017-11-30Bibliographically approved
Wei, W., Botteldooren, D., Renterghem, T. V., Hornikx, M. C., Forssén, J., Salomons, E. M. & Ögren, M. (2014). Urban background noise mapping: The general model. Acta Acoustica united with Acustica, 100(6), 1098-1111
Open this publication in new window or tab >>Urban background noise mapping: The general model
Show others...
2014 (English)In: Acta Acoustica united with Acustica, ISSN 1610-1928, E-ISSN 1861-9959, Vol. 100, no 6, p. 1098-1111Article in journal (Refereed) Published
Abstract [en]

Surveys show that inhabitants of dwellings exposed to high noise levels benefit from having access to a quiet side. However, current practice in noise prediction often underestimates the noise levels at a shielded façade. Multiple reflections between façades in street canyons and inner yards are commonly neglected and façades are approximated as perfectly flat surfaces yielding only specular reflection. In addition, sources at distances much larger than normally taken into account in noise maps might still contribute significantly. Since one of the main reasons for this is computational burden, an efficient engineering model for the diffraction of the sound over the roof tops is proposed, which considers multiple reflections, variation in building height, canyon width, façade roughness and different roof shapes. The model is fitted on an extensive set of full-wave numerical calculations of canyon-to-canyon sound propagation with configurations matching the distribution of streets and building geometries in a typical historically grown European city. This model allows calculating the background noise in the shielded areas of a city, which could then efficiently be used to improve existing noise mapping calculations. The model was validated by comparison to long-term measurements at 9 building façades whereof 3 were at inner yards in the city of Ghent, Belgium. At shielded façades, a strong improvement in prediction accuracy is obtained.

Keywords
Noise, Dwelling, Noise level, Mathematical model, Prediction, Reflection, Surface
National Category
Fluid Mechanics and Acoustics
Research subject
10 Road: Transport, society, policy and planning, 15 Road: Environment
Identifiers
urn:nbn:se:vti:diva-9364 (URN)10.3813/AAA.918789 (DOI)000343742800010 ()2-s2.0-84908132048 (Scopus ID)
Available from: 2016-05-25 Created: 2016-03-02 Last updated: 2017-11-30Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-8343-6613

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