Study on a prediction method of meteorological effects on outdoor sound propagation in residential areas

提出了一种基于时域有限差分（FDTD）的室外声传播数值模拟方法，该方法可以考虑CFD获得的任意住区气象条件。提出了一种采用6-ch的数值模拟结果的新听力系统。声音再现系统和假头麦克风。一年来，我们一直监测铁路噪音在约70米高的接收器上的声音传播情况，并研究了气象对声音从地面传播到更高位置的影响。

A numerical simulation method on outdoor sound propagation based on FDTD which can take into account arbitrary meteorological conditions in residential area obtained by CFD has been developed. A new hearing system of numerical simulation results has been proposed by using a 6-ch. sound reproduction system and a dummy head microphone. Sound propagation of railway noise to a receiver at about 70 m in height has been monitored throughout a year and the influence of meteorology on sound propagation from ground to a higher position has been investigated.