标准摘要
[中文适用范围]： 本文件规定了估计建筑物外墙或其他外表面的隔音或声压级差的计算模型。 该计算基于构成立面的不同元素的隔音指数，包括直接传播和侧向传播。 计算得出的结果大致相当于根据 ISO 16283-3 进行现场测量的结果。 可以针对频段或单个数字额定值进行计算。 计算结果还可用于计算道路交通等引起的室内声压级（见附件 E）。 本文件描述了计算模型的原理，列出了相关数量并定义了其应用和限制。 [外文原描述]： ISO 12354-3:2017 specifies a calculation model to estimate the sound insulation or the sound pressure level difference of a façade or other external surface of a building. The calculation is based on the sound reduction index of the different elements from which the façade is constructed and it includes direct and flanking transmission. The calculation gives results which correspond approximately to the results from field measurements in accordance with ISO 16283‑3. Calculations can be carried out for frequency bands or for single number ratings. The calculation results can also be used for calculating the indoor sound pressure level due to for instance road traffic (see Annex E). ISO 12354-3:2017 describes the principles of the calculation model, lists the relevant quantities and defines its applications and restrictions.
英文名称Building acoustics — Estimation of acoustic performance of buildings from the performance of elements — Part 3: Airborne sound insulation against outdoor sound