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A scale model study of parallel urban street canyons

Maarten Hornikx (Institutionen för bygg- och miljöteknik, Teknisk akustik) ; Jens Forssén (Institutionen för bygg- och miljöteknik, Teknisk akustik) ; Wolfgang Kropp (Institutionen för bygg- och miljöteknik, Teknisk akustik)
Proc. 149th MEETING OF THE ACOUSTICAL SOCIETY OF AMERICA, May 2005, Vancouver, Canada. (Only abstract) (2005)
[Konferensbidrag, övrigt]

The access to quiet areas in cities is of increasing importance. Recently, the equivalent sources method for a two dimensional situation of parallel urban street canyons has been developed. One canyon represents a busy road, whereas the other is one without traffic; the quiet side. With the model, the transfer function between the two canyons can be calculated, as well as the influence of diffusion, absorption, and atmospheric turbulence on the transfer function. A scale model study of two parallel canyons has now been executed. A scale of 1:40 has been chosen and the maximum length sequence technique has been applied using the MLSSA system. Results of the scale model study have been compared to calculations with the equivalent sources method. The difference between a two-dimensional and a three-dimensional quiet side, between a coherent and an incoherent line source and the influence of absorption and diffusion has been investigated. The scale model study also gives insight in the evolution of the sound field in the time domain. [Work supported by the Swedish Foundation for Strategic Environmental Research (MISTRA).]

Nyckelord: sound, acoustics, traffic noise, quiet areas, urban street canyons, sound propagation, measurements, calculations



Denna post skapades 2006-01-19. Senast ändrad 2015-01-08.
CPL Pubid: 9690

 

Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Teknisk akustik

Ämnesområden

Akustik

Chalmers infrastruktur