DIN EN 16272-3-2:2024-02 铁路应用 基础设施 作用于空气传播声音的隔音屏障和相关装置 确定声学性能的测试方法 第 3-2 部分：标准化铁路噪声谱和直接噪声的单数额定值
Railway applications - Infrastructure - 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 so...