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Urban background noise mapping: the multiple-reflection correction term

Maarten Hornikx, Jens Forssén, Dick Botteldooren UGent, Timothy Van Renterghem UGent, Weigang Wei, Mikael Ögren and Erik Salomons (2014) ACTA ACUSTICA UNITED WITH ACUSTICA. 100(2). p.293-305
abstract
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 A(can). Firstly, it is shown by numerical calculations that A(can) may be divided into independent source and receiver environment terms, A(s) and A(r). 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 A(s) and A(r) 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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
SITUATIONS, CANYONS, MODEL, SOUND-PROPAGATION
journal title
ACTA ACUSTICA UNITED WITH ACUSTICA
Acta Acust. United Acust.
volume
100
issue
2
pages
293 - 305
Web of Science type
Article
Web of Science id
000333013200012
JCR category
ACOUSTICS
JCR impact factor
0.783 (2014)
JCR rank
19/31 (2014)
JCR quartile
3 (2014)
ISSN
1610-1928
DOI
10.3813/AAA.918709
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
5697303
handle
http://hdl.handle.net/1854/LU-5697303
date created
2014-09-05 13:00:07
date last changed
2016-12-19 15:39:14
@article{5697303,
  abstract     = {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 A(can). Firstly, it is shown by numerical calculations that A(can) may be divided into independent source and receiver environment terms, A(s) and A(r). 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 A(s) and A(r) 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.},
  author       = {Hornikx, Maarten and Forss{\'e}n, Jens and Botteldooren, Dick and Van Renterghem, Timothy and Wei, Weigang and {\"O}gren, Mikael and Salomons, Erik},
  issn         = {1610-1928},
  journal      = {ACTA ACUSTICA UNITED WITH ACUSTICA},
  keyword      = {SITUATIONS,CANYONS,MODEL,SOUND-PROPAGATION},
  language     = {eng},
  number       = {2},
  pages        = {293--305},
  title        = {Urban background noise mapping: the multiple-reflection correction term},
  url          = {http://dx.doi.org/10.3813/AAA.918709},
  volume       = {100},
  year         = {2014},
}

Chicago
Hornikx, Maarten, Jens Forssén, Dick Botteldooren, Timothy Van Renterghem, Weigang Wei, Mikael Ögren, and Erik Salomons. 2014. “Urban Background Noise Mapping: The Multiple-reflection Correction Term.” Acta Acustica United with Acustica 100 (2): 293–305.
APA
Hornikx, Maarten, Forssén, J., Botteldooren, D., Van Renterghem, T., Wei, W., Ögren, M., & Salomons, E. (2014). Urban background noise mapping: the multiple-reflection correction term. ACTA ACUSTICA UNITED WITH ACUSTICA, 100(2), 293–305.
Vancouver
1.
Hornikx M, Forssén J, Botteldooren D, Van Renterghem T, Wei W, Ögren M, et al. Urban background noise mapping: the multiple-reflection correction term. ACTA ACUSTICA UNITED WITH ACUSTICA. 2014;100(2):293–305.
MLA
Hornikx, Maarten, Jens Forssén, Dick Botteldooren, et al. “Urban Background Noise Mapping: The Multiple-reflection Correction Term.” ACTA ACUSTICA UNITED WITH ACUSTICA 100.2 (2014): 293–305. Print.