这份文件 a） 定义建筑物和地板的冲击隔音的单个数量， b） 给出了根据ISO 10140-3和ISO 16283-2规定的三分之一倍频程带和ISO 16283-2规定的仅用于现场测量的倍频程带测量结果确定这些量的规则， c） 定义了根据ISO 10140-3进行的测量结果计算出的地板覆盖物和浮动地板的冲击声降低的单数数量，以及 d） 指定一个程序，用于评估轻质地板上地板覆盖物对冲击声压级的加权降低。 本文件中的单数数量旨在对冲击隔声进行评级，并简化建筑规范中声学要求的制定。另外一张单张- 在需要表示不确定度的地方（频谱适应项除外），以0,1 dB的步长进行数字评估。在计算需要时，规定了单个数字量的数值。 附录A中给出了扩大频率范围内的测量额定值。 附录B中给出了根据其与地板覆盖物结合的性能获得裸露重型地板单数字量的方法。 附录C中给出了单个数量的计算示例。 附录D中给出了使用重型和轻型冲击源（橡胶球）进行测量的额定值。

This document a) defines single-number quantities for impact sound insulation in buildings and of floors, b) gives rules for determining these quantities from the results of measurements carried out in one-third-octave bands in accordance with ISO 10140-3 and ISO 16283-2, and in octave bands in accordance with that option in ISO 16283-2 for field measurements only, c) defines single-number quantities for the impact sound reduction of floor coverings and floating floors calculated from the results of measurements carried out in accordance with ISO 10140-3, and d) specifies a procedure for evaluating the weighted reduction in impact sound pressure level by floor coverings on lightweight floors. The single-number quantities in accordance with this document are intended for rating impact 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 where it is needed for the expression of uncertainty (except for spectrum adaptation terms). Numerical values of the single-number quantities are specified where required for calculations. The rating of measurements over an enlarged frequency range is given in Annex A. A method for obtaining single-number quantities for bare heavy floors according to their performance in combination with floor coverings is given in Annex B. Example calculations of single-number quantities are given in Annex C. The rating of measurements with a heavy and soft impact source (rubber ball) is given in Annex D.