Draft Document - Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 5: Intrinsic characteristics - Sound absorption under direct sound field conditions; German and English version prEN 16272-5:2022
文件草案——铁路应用——基础设施——作用于空气声传播的隔音屏障和相关装置——声学性能测定的试验方法——第5部分:固有特性——直接声场条件下的吸声;德语和英语版本