A radiosity model has been developed for calculating the sound distribution in urban streets with diffusely reflecting boundaries. In this paper I present the results of a parametric study by using the computer model. A typical urban element consisting of a major street and two side streets is analysed. The analysis is focused on the characteristics of sound pressure level and reverberation time in the urban element, as well as the effectiveness of the boundary treatments and street arrangements for noise reduction.
References
1.
BradleyJ S, 1977, “A study of traffic noise attenuation around buildings”Acustica38247–252
2.
BullenRFrickeF, 1976, “Sound propagation in a street”Journal of Sound and Vibration4633–42
3.
CohenM FGreenbergD P, 1985, “The hemi-cube: a radiosity solution for complex environments”Computer Graphics1931–40
4.
DaviesH G, 1978, “Multiple-reflection diffuse-scattering model for noise propagation in streets”Journal of the Acoustical Society of America64517–521
5.
FoleyJ Dvan DamAFeinerS KHughesJ F, 1990Computer Graphics: Principle and Practice (Addison-Wesley, Reading, MA)
6.
GrimwoodC J, 1993, “A national survey of the effects of environmental noise on people at home”Proceedings of the Institute of Acoustics151
7.
HeutschiK, 1995, “Computermodell zur Berechnung von Bebauungszuschlägen bei Straßenverkehrslärm” [Computer model for the calculation of the increase of traffic noise owing to buildings along a street]Acustica8126–35
8.
HodgsonM, 1991, “Evidence of diffuse surface reflections in room”Journal of the Acoustical Society of America89765–771
9.
HothersallD CHoroshenkovK VMercyS E, 1996, “Numerical modelling of the sound field near a tall building with balconies near a road”Journal of Sound and Vibration198507–515
10.
KangJ, 1988, “Experiments on the subjective assessment of noise reduction by absorption treatments”Chinese Noise and Vibration Control520–28
11.
KangJ, 1995, “Experimental approach to the effect of diffusers on the sound attenuation in long enclosures”Building Acoustics2391–402
12.
KangJ, 1996a, “Reverberation in rectangular long enclosures with geometrically reflecting boundaries”Acustica/Acta Acustica89509–516
13.
KangJ, 1996b, “Acoustics in long enclosures with multiple sources”Journal of the Acoustical Society of America99985–989
14.
KangJ, 2000a, “Sound propagation in street canyons: comparison between diffusely and geometrically reflecting boundaries”Journal of the Acoustical Society of America1071394–1404
15.
KangJ, 2000b, “Reverberation in rectangular long enclosures with diffusely reflecting boundaries”Acustica/Acta Acustica forthcoming
16.
KuttruffH, 1975, “Zur Berechnung von Pegelmittelwerten und Schwankungsgrößen bei Straßenlärm” [On calculating the average levels of street noise and their degree of fluctuation]Acustica3257–69
17.
KuttruffH, 1997, “Energetic sound propagation in rooms”Acustica/Acta Acustica83622–628
18.
LewersT, 1993, “A combined beam tracing and radiant exchange computer model of room acoustics”Applied Acoustics38161–178
19.
LyonR H, 1974, “Role of multiple reflections and reverberation in urban noise propagation”Journal of the Acoustical Society of America55493–503
20.
MooreG R, 1984An Approach to the Analysis of Sound in Auditoria PhD thesis, Department of Architecture, University of Cambridge, Cambridge
21.
OldhamD JRadwanM M, 1994, “Sound propagation in city streets”Budding Acoustics165–88
22.
SergeevM V, 1979, “Scattered sound and reverberation on city streets and in tunnels”Soviet Physics: Acoustics25248–252
23.
SiegelRHowellJ, 1981Thermal Radiation Heat Transfer (Hemisphere, Washington, DC)
24.
SillionF XPuechC, 1994Radiosity and Global Illumination (Morgan Kaufmann, San Francisco, CA)
25.
SteenackersPMynckeHCopsA, 1978, “Reverberation in town streets”Acustica40115–119
26.
StibbsR, 1971, “The prediction of surface luminances in architectural space”, WP-54, Center for Land Use and Built Form Studies, University of Cambridge, Cambridge
27.
TsangrassoulisASantamourisMAsimakopoulosDTregenzaP R, 1999, “A method for the estimation of illuminances on surfaces of urban canyons with balconies in sunlit areas”Lighting Research and Technology315–12
28.
WuSKittingerE, 1995, “On the relevance of sound scattering to the prediction of traffic noise in urban streets”Acustica8136–42
