Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test methodology
4.1 General
4.2 Accuracy
5 Measurement uncertainty
6 Instrumentation
6.1 Instrumentation system
6.2 Calibration
7 Operating conditions of the source under test
8 Preliminary survey
8.1 Background noise
8.2 Characterization of the source under test
9 Positions of the reference sound source
9.1 One position
9.2 More than one position
10 Measurement procedure
10.1 Selection of microphone positions
10.2 Measurements
10.3 Correction for background noise
10.4 Evaluation of the measurement uncertainty
11 Calculation of sound power levels
11.1 One RSS position
11.2 Several RSS positions
11.3 A-weighted sound power level
12 Information to be recorded
13 Information to be reported
Annex A (normative) Evaluation of DLf and of the measurement
uncertainty
Annex B (informative) Recommendations for the location of
the reference sound source and the
microphones, if only one RSS position
is used
Bibliography