Historical
DIN EN ISO 717-1:2006
Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation (ISO 717-1:1996 + AM1:2006); German version EN ISO 717-1:1996 + A1:2006
The document defines single-number quantities for the airborne sound insulation in buildings and of building elements such as wall floors, doors and windows and gives rules for determining these quantities.
Deutsches Institut für Normung [din]