EN 16272-2:2012
铁路应用设施.跟踪噪声壁垒及相关设备作用于空气中的声传播.测试方法确定声学性能第2部分:内在特征.机载隔音声音扩散条件下在实验室
Railway applications - Track - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 2: Intrinsic characteristics - Airborne sound insulation in the laboratory under diffuse s