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I.S. EN ISO 3747:2010

Current
Current

The latest, up-to-date edition.

ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS AND SOUND ENERGY LEVELS OF NOISE SOURCES USING SOUND PRESSURE - ENGINEERING/SURVEY METHODS FOR USE IN SITU IN A REVERBERANT ENVIRONMENT
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2010

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test environment
5 Instrumentation and measurement equipment
6 Location, installation and operation of noise source under
   test
7 Measurement procedure
8 Calculation of sound power levels and sound energy levels
9 Measurement uncertainty
10 Information to be recorded
11 Test report
Annex A (normative) - Evaluation of the excess of sound pressure
        level at a given distance
Annex B (informative) - Recommendations for the location of the
        reference sound source and the microphones, if only one
        position is used for the reference sound source
Annex C (normative) - Sound power level and sound energy level
        under reference meteorological conditions
Annex D (normative) - Calculation of A-weighted sound power
        levels and A-weighted sound energy levels from
        octave-band levels
Annex E (informative) - Guidance on the development of
        information on measurement uncertainty
Bibliography
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU Directive
         2006/42/EC

Defines a method for determining the sound power level or sound energy level of a noise source by comparing measured sound pressure levels emitted by a noise source (machinery or equipment) mounted in situ in a reverberant environment, with those from a calibrated reference sound source.

DevelopmentNote
2010 Edition reissued in January 2011 incorporating Correction Letter. (06/2015)
DocumentType
Standard
Pages
59
PublisherName
National Standards Authority of Ireland
Status
Current
Supersedes

ISO 7574-2:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 2: Methods for stated values for individual machines
ISO/TS 7849-2:2009 Acoustics — Determination of airborne sound power levels emitted by machinery using vibration measurement — Part 2: Engineering method including determination of the adequate radiation factor
ISO 4871:1996 Acoustics — Declaration and verification of noise emission values of machinery and equipment
ISO 12001:1996 Acoustics Noise emitted by machinery and equipment Rules for the drafting and presentation of a noise test code
ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
ISO 3743-2:1994 Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms
ISO 7574-4:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 4: Methods for stated values for batches of machines
ISO/TR 25417:2007 Acoustics Definitions of basic quantities and terms
ISO 9614-1:1993 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
IEC 60942:2003 Electroacoustics - Sound calibrators
ISO 9296:2017 Acoustics — Declared noise emission values of information technology and telecommunications equipment
ISO 3740:2000 Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards
ISO 9613-1:1993 Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
ISO 14257:2001 Acoustics — Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance
ISO 9614-2:1996 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning
ISO 7574-1:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions
ISO/TS 7849-1:2009 Acoustics — Determination of airborne sound power levels emitted by machinery using vibration measurement — Part 1: Survey method using a fixed radiation factor
ISO 80000-8:2007 Quantities and units Part 8: Acoustics
ISO 3746:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane
ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
ISO 9614-3:2002 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 3: Precision method for measurement by scanning
ISO 7574-3:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 3: Simple (transition) method for stated values for batches of machines
ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
ISO 3743-1:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room

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