BS EN ISO 12354-4:2017规定了估算外壳辐射声功率级的计算模型 建筑物内部的空气传播声音，主要是通过测量的声音 建筑物内的压力水平和测量数据，这些数据表征了 建筑围护结构中的相关元素和开口。这些声功率级 建筑围护结构内或前方的其他声源构成计算噪声的基础 距离建筑物选定距离处的声压级，作为声学性能的衡量标准 建筑物。根据室内声源的知识预测室内声压级是外部的 本文件的范围。室外声音传播的预测不在本文件的范围内。注:对于简单的传播条件，给出了估算声压级的方法 在附录E中，本文件描述了计算模型的原理，列出了相关的数量和数量 定义其应用程序和限制。交叉引用:ISO 10140-1:2016ISO 16283-3:2016ISO 7235:2003 Ed 2ISO 10140-2:2010ISO 717-1:2013 ED3ISO 12354-3:2017ISO 9613-2:1996EN 12354-5:2009ISO 12354-1:2017购买本文件时提供的所有当前修订版均包括在内。

BS EN ISO 12354-4:2017 specifies a calculation model to estimate the sound power level radiated by the envelope of a building due to airborne sound inside that building, primarily by means of measured sound pressure levels inside the building and measured data which characterize the sound transmission by the relevant elements and openings in the building envelope. These sound power levels, together with those of other sound sources in or in front of the building envelope, form the basis for the calculation of the sound pressure level at a chosen distance from a building as a measure for the acoustic performance of buildings.The prediction of the inside sound pressure level from knowledge of the indoor sound sources is outside the scope of this document.The prediction of the outdoor sound propagation is outside the scope of this document.NOTE For simple propagation conditions an approach is given for the estimation of the sound pressure level in Annex E.This document describes the principles of the calculation model, lists the relevant quantities and defines its applications and restrictions.Cross References:ISO 10140-1:2016ISO 16283-3:2016ISO 7235:2003 Ed 2ISO 10140-2:2010ISO 717-1:2013 ED3ISO 12354-3:2017ISO 9613-2:1996EN 12354-5:2009ISO 12354-1:2017All current amendments available at time of purchase are included with the purchase of this document.