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PROCEDURES FOR OUTDOOR MEASUREMENT OF SOUND PRESSURE LEVEL
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Available format(s): Hardcopy, PDF
Superseded date: 09-05-2023
Language(s): English
Published date: 01-01-2009
Publisher: Acoustical Society of America
Foreword0 Introduction1 Scope, purpose and applications2 References to other standards3 Definitions4 Environmental requirements 4.1 General 4.2 Factors influencing sound pressure level measurements 4.3 Outdoor measurement of sound pressure level 4.4 METHOD #1: General method for routine measurements 4.5 METHOD #2: Precision method for accurate measurement 4.6 Terrain equivalence 4.7 Ground equivalence5 Acoustical environment 5.1 Types of measurements 5.2 Classification of the sound source6 Instruments for measuring sound pressure level outdoors 6.1 Sound level meter/analyser 6.2 Microphone 6.3 Calibration 6.4 Tape recorder 6.5 Miscellaneous 6.6 Configuration of measuring system 6.7 Wind speed and direction 6.8 Temperature sensor7 Measurement 7.1 Premeasurement planning 7.2 Sound descriptor 7.3 Source configuration and operation 7.4 Duration or sample size 7.5 Data collection8 Data reduction 8.1 Corrections 8.2 Experimental error9 Reporting 9.1 Introductory information 9.2 Site sketches 9.3 Characterisation of the source 9.4 Documentation of the instrumentation 9.5 Meteorological data 9.6 Acoustical data 9.7 Other observationsAnnex A - Propagation of sound outdoors A.1 Geometrical divergence A.2 Atmospheric absorption A.3 Effects of the environment A.4 Miscellaneous attenuation A.5 Discussion
Describes procedures for the measurement of sound pressure levels in the outdoor environment, considering the effects of the ground, the effects of refraction due to wind and temperature gradients, and the effects due to turbulence.
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