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SN EN 61400-11 : 2003 AMD 1 2006
Withdrawn
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WIND TURBINE GENERATOR SYSTEMS - PART 11: ACOUSTIC NOISE MEASUREMENT TECHNIQUES
12-12-2015
12-01-2013
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Symbols and units
5 Outline of method
6 Instrumentation
6.1 Acoustic instruments
6.2 Non-acoustic Instruments
6.3 Traceable calibration
7 Measurements and measurement procedures
7.1 Measurement positions
7.2 Acoustic measurements
7.3 Non-acoustic measurements
8 Data reduction procedures
8.1 Wind speed
8.2 Correction for background noise
8.3 Apparent sound power levels
8.4 One-third octave band levels
8.5 Tonality
8.6 Directivity (optional)
9 Information to be reported
9.1 Characterisation of the wind turbine
9.2 Physical environment
9.3 Instrumentation
9.4 Acoustic data
9.5 Non-acoustic data
9.6 Uncertainty
Annex A (informative) Other possible characteristics of wind
turbine noise emission
and their quantification
Annex B (informative) Criteria for recording/playback equipment
Annex C (Informative) Assessment of turbulence intensity
Annex D (informative) Assessment of measurement uncertainty
Bibliography
Figures
Tables
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