UNE-EN ISO 11690-2:1997

1 Scope
2 Normative reference
3 Definitions
4 Technical aspects of noise control
5 Noise control at source
6 Noise control on the transmission path
7 Noise control at the work station
8 Verification methods
9 New technologies
Annexes
A Modification of replacement of machine components
B Arrangement of sound sources
C Enclosures
D Silencers
E Noise barriers and screens in rooms
F Acoustical treatment of surfaces
G Structure-borne sound insulation
H Airborne sound insulation of partitions
I Noise control at the work station
J Example of a new technology
K Bibliography

Concerned with the technical aspects of noise control in workplaces (audible sound only). Covers technical measures, related acoustical quantities, magnitude of noise reduction and verification methods.