A prediction method of non-stationary road traffic noise based on fluctuation patterns of an average number of flowing vehicles
✍ Scribed by Shizuma Yamaguchi; Yuichi Kato
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 616 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0003-682X
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✦ Synopsis
A BSTRA CT
The actual road traffic noise whwh ts encountered m daily hfe usually shows non°stattonary fluctuatwn patterns caused by the temporal change of traffic flow Also, stattstwal parameters such as the reed:an value of the sound level, Lx, as well as the lower order stattstwal values of the sound energy or level, are :mportant for no:se evaluatton and regulatton problems In thts paper, a statzstwal theory for the probabthty denstty functton (pdf) of non-stat:onary norse level fluctuatwn zs proposed m a case where the road traffic flow ts controlled by traffic stgnals, by paying special attentton to the pertod:ctty of fluctuatton patterns of the statlstws of the norse level and the number of flowing vehwles Next, a new practwal tr:ai of the stattstwal predwtton for the pdf of non-statzonary road traffic noise zs considered The expertmental results of applying thts m atrtal to the actual no:se data are m full agreement w:th the theory