声学. 建筑物组件隔音的实验室测定. 第2部分: 空中隔音测量

[中文适用范围]： 本文件规定了测量建筑产品空气声隔离的实验室方法，例如墙壁、地板、门、窗、百叶窗、外墙元件、外墙、玻璃、小型技术元件，例如传输空气装置、通风板（通风板） ）、室外进气口、电线管道、运输密封系统和组合，例如带衬里的墙壁或地板、吊顶或浮动地板。 测试结果可用于比较建筑构件的隔声性能，根据构件的隔声能力进行分类，帮助设计需要一定声学性能的建筑产品，并评估完整建筑物的原位性能。 测量是在实验室测试设施中进行的，其中通过侧翼路径的声音传输被抑制。 根据本文件进行的测量结果不能直接适用于现场情况，而不考虑其他影响隔音的因素，例如侧向传输、边界条件和总损耗系数。 [外文原描述]： This document specifies a laboratory method for measuring the airborne sound insulation of building products, such as walls, floors, doors, windows, shutters, façade elements, façades, glazing, small technical elements, for instance transfer air devices, airing panels (ventilation panels), outdoor air intakes, electrical raceways, transit sealing systems and combinations, for example walls or floors with linings, suspended ceilings or floating floors. The test results can be used to compare the sound insulation properties of building elements, classify elements according to their sound insulation capabilities, help design building products which require certain acoustic properties and estimate the in situ performance in complete buildings. The measurements are performed in laboratory test facilities in which sound transmission via flanking paths is suppressed. The results of measurements made in accordance with this document are not applicable directly to the field situation without accounting for other factors affecting sound insulation, such as flanking transmission, boundary conditions and total loss factor.