DIN EN ISO 717-1-2021 声学. 建筑和建筑构件的隔音等级. 第1部分: 空气隔音(ISO 717-1-2020); 德文版 EN ISO 717-1-2020
Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation (ISO 717-1:2020); German version EN ISO 717-1:2020
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 b