PD CEN/TS 16272-5:2014
铁路应用.轨道.航空中声音传播的降噪屏障及相关设施.确定声学性能的试验方法.第5部分:固有特性.在直接声场条件下的声反射的原位值
Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - In situ values of sound reflection under direct sound field