On the improved point-to-point calculations for noise mapping in shielded urban areas
Paper i proceeding, 2012

Noise mapping of 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 these 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, the attenuation terms describing these propagation paths are extended by terms including geometrical aspects of the urban environment both in the source and in the receiver area. In the present work, it has been studied to what extent these terms may be treated as being independent of the source-receiver distance. Also, the validity of treating the propagation path in a 2D plane rather than in 3D is investigated. Results obtained from a wave-based acoustic propagation model have been used for this assessment.

Författare

Maarten Hornikx

Chalmers, Bygg- och miljöteknik, Teknisk akustik

Jens Forssén

Chalmers, Bygg- och miljöteknik, Teknisk akustik

Mikael Ögren

D. Botteldooren

T. Van Renterghem

W. Wei

E. Salomons

41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012; New York, NY; United States; 19 August 2012 through 22 August 2012

Vol. 6 5223-5234

Ämneskategorier

Miljöanalys och bygginformationsteknik

ISBN

978-162748560-9