Hutchins D A, Jones H W, Paterson B, Russell L T
J Acoust Soc Am. 1985 Feb;77(2):536-46. doi: 10.1121/1.391872.
An investigation is presented into the performance of parallel barrier configurations, using acoustical scale modeling. A realistic geometry is investigated, with the source being positioned over a paved roadway and the receiver over grass-covered ground. The grass-covered ground surface was properly modeled in terms of its impedance. Results were obtained for a range of barrier types, and demonstrate that frequency dependent effects are evident in barrier insertion loss data. In most cases, the barrier on the far side of the source did not significantly affect sound levels at the receiver. The most effective barrier design was found to be that of a gradual grass-covered slope up to an upright, thin barrier.
本文通过声学比例模型对平行屏障配置的性能进行了研究。研究了一种实际几何形状，声源位于铺砌的道路上方，接收器位于草地地面上方。根据草地地面的阻抗对其进行了适当建模。获得了一系列屏障类型的结果，结果表明，屏障插入损耗数据中存在明显的频率相关效应。在大多数情况下，声源远侧的屏障对接收器处的声级没有显著影响。最有效的屏障设计是一个逐渐向上倾斜的草地斜坡直至一个直立的薄屏障。
