DIN EN 16272-1:2013 铁路应用设施.轨道.隔声板和相关对空气声音传播有作用的设备.声学性能测定试验方法.第1部分:本质特征.扩散声场条件下实验室内吸音作用.德文版本EN 16272-1-2012
Railway applications.Track.Noise barriers and related devices acting on airborne sound propagation.Test method for determining the acoustic performance.Part 1: Intrinsic characteristics.Sound absorption in the laboratory under diffuse sound field conditio
This European Standard specifies the laboratory method for measuring the sound absorption of flat noise barriers or flat claddings for retaining walls or tunnels. It covers the assessment of the intrinsic sound absorption performance of noise barriers and related devices acting on airborne sound propagation designed for railways which can reasonably be assembled inside the testing facility described in EN ISO 354. The test method in EN ISO 354, referred to in this European Standard, is strictly valid only for flat absorbers and in particular excludes devices which act as slightly damped resonators. Some devices will depart significantly from these requirements and in these cases care is needed in interpreting the results.