BS EN ISO 12354-2:2017规定了计算模型，该模型设计用于估算 建筑物中的房间，主要使用直接或间接侧翼的测量数据 通过参与的建筑构件和理论推导的声音传播方法 在结构元素中传播。描述了一个详细的模型，用于在1/3倍频程的频带内进行计算 根据ISO 717-1，100 Hz至3150 Hz，如果需要，可扩展至1/3倍频程50 Hz 元素数据和连接数据可用（见附录E）； 建筑物的单数评级可以 可根据计算结果确定。应用领域受限的简化模型 由此推导出，直接计算单数评级，使用单数评级 元素的定义；使用 可根据ISO 12354-1:2017附录K中所述的方法确定简化模型 （见第5条）。本文件描述了计算方案的原理，列出了相关的工程量和 定义其应用程序和限制。交叉引用:ISO 717-1:2013 ED3ISO 10140-3:2010ISO 10140-2:2010ISO 717-2:2013 ED3ISO 16283-2:2015ISO 10848-4:2010 Ed 1ISO 10848-1:2006（R10）Ed 1ISO 12354-1:2017ONORM B 8115E DIN 7396ISO 16283-2:2015ISO 10848-2:2006 Ed 1DIN 4109:1989（E）ISO 10140-1:2016购买本文件时可用的所有现行修订均包括在内。

BS EN ISO 12354-2:2017 specifies calculation models designed to estimate the impact sound insulation between rooms in buildings, primarily using measured data which characterize direct or indirect flanking transmission by the participating building elements and theoretically-derived methods of sound propagation in structural elements.A detailed model is described for calculation in frequency bands, in the frequency range 1/3 octave 100 Hz to 3150 Hz in accordance with ISO 717-1, possibly extended down to 1/3 octave 50 Hz if element data and junction data are available (see Annex E); the single number rating of buildings can be determined from the calculation results. A simplified model with a restricted field of application is deduced from this, calculating directly the single number rating, using the single number ratings of the elements; the uncertainty on the apparent impact sound pressure level calculated using the simplified model can be determined according to the method described in ISO 12354-1:2017, Annex K (see Clause 5).This document describes the principles of the calculation scheme, lists the relevant quantities and defines its applications and restrictions.Cross References:ISO 717-1:2013 ED3ISO 10140-3:2010ISO 10140-2:2010ISO 717-2:2013 ED3ISO 16283-2:2015ISO 10848-4:2010 Ed 1ISO 10848-1:2006 (R10) Ed 1ISO 12354-1:2017ONORM B 8115E DIN 7396ISO 16283-2:2015ISO 10848-2:2006 Ed 1DIN 4109:1989 (E)ISO 10140-1:2016All current amendments available at time of purchase are included with the purchase of this document.