2021DIN EN ISO 11690-2:2021 Acoustics - Recommended practice for the design of low-noise workplaces containing machinery - Part 2: Noise control measures (ISO 11690-2:2020); German version EN ISO 11690-2:2020
1970DIN EN ISO 11690-2 E:2020-09 Recommended practices for low-noise design of workplaces with acoustic machines Part 2: Noise reduction measures (draft)
1997DIN EN ISO 11690-2:1997 Acoustics - Recommended practice for the design of low-noise workplaces containing machinery - Part 2: Noise control measures (ISO 11690-2:1996); German version EN ISO 11690-2:1996