NBN EN ISO 11546-2 : 2009

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definitions
4 Choice of measurement method
5 Instrumentation
6 Test methods applicable to enclosures with the
      actual sound source
7 Test methods applicable to enclosures without the
      actual sound source
8 Uncertainty
9 Information to be recorded
10 Information to be reported
Annexes
A (normative) Artificial sound source
B (informative) Example of a source spectrum
C (informative) Guidelines for evaluating the
      applicability of different test environments for
      in situ measurements
D (informative) Estimated noise insulation due to
      the enclosure for a specific noise spectrum
E (informative) Bibliography
Tables
1 Applicability of the different test methods
2 Data to be reported
C.1 Requirements concerning environmental correction K2
      and background noise
C.2 Approximate values of the mean sound absorption
      coefficient, a, for different room configurations
Figures
A.1 Artificial sound source
B.1 Source spectrum for an artificial sound source
      constructed according to the guidelines given in
      Annex A
C.1 Corresponding values of a and Sv/S

Describes in situ methods for determining the sound insulation performance (insertion loss) of machine enclosures. Applicable to a total enclosure, not to individual panels.