本文件 a） 定义建筑物和建筑构件（如墙、地板、门和窗）中空气传播隔声的单数数量， b） 考虑各种噪声源的不同声级谱，例如建筑物内的噪声源和建筑物外的交通，以及 c） 给出了根据三分之一倍频程或倍频程带测量结果确定这些量的规则，例如根据ISO 10140-2和ISO 16283-1。 本文件中的单数字量用于评估空气传播隔声，并简化建筑规范中声学要求的制定。对于不确定度的表达（频谱适应项除外），指示以0.1dB的步长进行额外的单数值评估。根据不同的需要，指定了单数字量的所需数值。 单数值量基于三分之一倍频程带或倍频程带的测量结果。 对于根据ISO 10140-2进行的实验室测量，单数值量仅使用三分之一倍频程频带计算。 在扩大的频率范围内进行的测量结果的评级在附录B中处理。

This document a) defines single-number quantities for airborne sound insulation in buildings and of building elements such as walls, floors, doors, and windows, b) takes into consideration the different sound level spectra of various noise sources such as noise sources inside a building and traffic outside a building, and c) gives rules for determining these quantities from the results of measurements carried out in one-third-octave or octave bands for example in accordance with ISO 10140-2 and ISO 16283-1. The single-number quantities in accordance with this document are intended for rating airborne sound insulation and for simplifying the formulation of acoustical requirements in building codes. An additional single-number evaluation in steps of 0,1 dB is indicated for the expression of uncertainty (except for spectrum adaptation terms). The required numerical values of the single-number quantities are specified according to varying needs. The single-number quantities are based on results of measurements in one-third-octave bands or octave bands. For laboratory measurements made in accordance with ISO 10140-2, single-number quantities are calculated using one-third-octave bands only. The rating of results of measurements carried out over an enlarged frequency range is dealt with in Annex B.