A theoretically-based method to estimate highway noise levels, with emphasis on parallel barrier insertion loss determination
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概要
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In recent years, there has been a proliferation of knowledge concerning highway noise generation and control. There has also been many kilometers of noise barriers constructed. Two countries that have led in the area of highway noise control are Japan and the United States. Each country has developed an accurate prediction methodology, although there are significant differences between them. One objective of this paper is to discuss these differences, as one way of introducing the United States method into the international literature. The other objective of the paper is to present a method developed by the authors to quantify the insertion loss degradation caused by the presence of parallel reflective highway noise barriers. This method allows the user to locate spatially all image sources, and to determine their magnitude. Comparisons with results from scale model studies indicate that this method is quite accurate.
- 社団法人日本音響学会の論文