EN 16272-3-2:2014
铁路应用.轨道.作用于空气中声音的传播的隔声板及相关设备.用于评定声音性能的测试方法.第3-2部分:标准化噪声谱及直接场应用的单数等级
Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-2: Normalized railway noise spectrum and single number ratings for direct field applicat