Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Urban background noise mapping: The multiple-reflection correction term
Eindhoven University of Technology .
Chalmers Tekniska Högskola.
Ghent University.
Ghent University.
Show others and affiliations
2014 (English)In: Acta Acoustica united with Acustica, ISSN 1610-1928, E-ISSN 1861-9959, Vol. 100, no 2, 293-305 p.Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

Mapping of road traffic noise in urban areas according to standardized engineering calculation methods systematically results in an underestimation of noise levels at areas shielded from direct exposure to noise, such as inner yards. In most engineering methods, road traffic lanes are represented by point sources and noise levels are computed utilizing point-to-point propagation paths. For a better prediction of noise levels in shielded urban areas, an extension of engineering methods by an attenuation term Acan has been proposed, including multiple reflections of the urban environment both in the source and in the receiver area.

The present work has two main contributions for the ease of computing Acan. Firstly, it is shown by numerical calculations that Acan may be divided into independent source and receiver environment terms, As and Ar. Based on an equivalent free field analogy, the distance dependence of these terms may moreover be expressed analytically. Secondly, an analytical expression is proposed to compute As and Ar for 3D configurations from using 2D configurations only. The expression includes dependence of the street width-to-height ratio, the difference in building heights and the percentage of facade openings in the horizontal plane. For the expression to be valid, the source should be separated from the receiver environment by at least four times the street width.

Place, publisher, year, edition, pages
2014. Vol. 100, no 2, 293-305 p.
Keyword [en]
Noise, Measurement, Urban area, Calculation
National Category
Fluid Mechanics and Acoustics
Research subject
10 Road: Transport, society, policy and planning, 15 Road: Environment
Identifiers
URN: urn:nbn:se:vti:diva-9340DOI: 10.3813/AAA.918709ISI: 000333013200012ScopusID: 2-s2.0-84894560001OAI: oai:DiVA.org:vti-9340DiVA: diva2:1088323
Available from: 2017-04-12 Created: 2017-04-12 Last updated: 2017-04-18Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Ögren, Mikael
By organisation
Enviroment and traffic analysis
In the same journal
Acta Acoustica united with Acustica
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf