NF EN ISO 11688-2 : 2004

Contents
1. Scope
2. References
3. Definitions
4. Acoustical modelling
5. Control of airborne and liquid-borne noise
    5.1 Generation of fluid-dynamic noise
    5.2 Noise control measures
6. Control of structure-borne sound
    6.1 Model of sound generation
    6.2 Internal sources
    6.3 Transmission of structure-borne sound
    6.4 Control of structure-borne sound transmission
         by damping
    6.5 Radiation
7. Analysis by measurement methods
    7.1 Purpose of the analysis
    7.2 Internal sources
    7.3 Transmission paths
    7.4 Radiation
    7.5 Summary of procedures for the analysis of existing
         machinery by measurement methods
8. Analysis of computational method
    8.1 Purpose of the analysis
    8.2 Deterministic methods
    8.3 Statistical methods
    8.4 Applicability of computational methods
Annex A Example of the estimation of airborne sound emission
of a machine caused by structure-borne and airborne sound
emission from a component
Annex B Glossary
Bibliography

Gives the physical background for the low-noise design rules and examples given in ISO/TR 11688-1 where the use of extensive special literature is supported. It is meant for designers of machinery and equipment to use as well as users and/or buyers of machines and authorities in the field of legislation, supervision or inspection.