On a Simplified Calculation Method of Equivalent Sound Level of Road Traffic Noise Which Consider the Difference Between the Pavements

Autor:	Hideki Ura, Kouhei Makita, Shingo Kuma, Kenichi Teramachi, Yoshinori Watanabe
Rok vydání:	2002
Předmět:	geography Engineering Noise geography.geographical_feature_category Noise measurement business.industry Noise reduction Range (statistics) business Road traffic Sound (geography) Simulation
Zdroj:	INFRASTRUCTURE PLANNING REVIEW. 19:245-253
ISSN:	1884-8303 0913-4034
DOI:	10.2208/journalip.19.245
Popis:	In the new environmental standard for road traffic noise, equivalent sound level was adopted instead of medium value. At the same time, the prediction model of road traffic noise was proposed by Acoustical Soc. of Japan. This model is utilized for the environmental assessment, and the application range is also wide. However, designers can not calculate easily the value of the road traffic noise using this model. Therefore, authors proposed the calculation method which satisfied two following requirements regardless of usual pavement, drainage pavement, though the application range is limited to the roadside noise as the automobile steadily runs.(1) Equivalent sound level can be easily calculated using mathematical expressions and figures.(2) Designers can easily decide noise reduction countermeasure of the object site.
Databáze:	OpenAIRE
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