Historical
BS EN ISO 11690-2:1997
Acoustics. Recommended practice for the design of low-noise workplaces containing machinery. Noise control measures (British Standard)
This part of ISO 11690 deals with the technical aspects of noise control in workplaces. The various technical measures are stated, the related acoustical quantities described, the magnitude of noise reduction discussed and the verification methods outlined.
This part of ISO 11690 deals only with audible sound.
British Standards Institution [bsi]