Computer simulation of road traffic noise in an urban built-up area

✍ Scribed by Wu Shuoxian

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 277 KB
• Volume: 22
• Category: Article
• ISSN: 0003-682X
• DOI: 10.1016/0003-682x(87)90016-8

✦ Synopsis

This paper describes a new computer simulation method capabh, of predicting noise let,els, such as L t o. Lso and Lcq..from a multi-O'pe traffic stream. In our work. t'ehk'k's trat'elling on a multi-lane road are rearranged into an orderly one-wa.t' flow. Comparison with the results of simuhttion lane b)' lane shows that this new thinking is fi,asihh,. Besides am, gative exponential model ( M! moch'l), another headwa)' rood,,! (M2 model), whh'h describes the characteristics o.['a composite random traffic flow with some t,ehh'le bum'hes. is also um,d. The computer simulation flow chart is given. Based on the principh, of geometrical acoustics and the superposititm c~ #nportant earl)' re]letted sound energy on direct sound energy, the computer model considers the contahmu,nt effects associated with hasicall)" unhroken faeades parallel to a street. Cah'ulations show that shnulathm data agree with measurements well.