10/30094845 DC : 0

Superseded

BS ISO 3745 - ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS AND SOUND ENERGY LEVELS OF NOISE SOURCES USING SOUND PRESSURE - PRECISION METHODS FOR ANECHOIC TEST ROOMS AND HEMI-ANECHOIC TEST ROOMS

Available format(s)

Hardcopy , PDF

Superseded date

30-04-2012

Language(s)

English

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Reference meteorological conditions
5 Test rooms
6 Instrumentation
7 Definition, location, installation and operation of noise
   source under test
8 Measurement surface
9 Determination of sound power levels and sound energy levels
10 Measurement uncertainty
11 Information to be recorded
12 Information to be reported
Annex A (normative) - General procedures for qualification of
        free-field and hemi-free-field rooms
Annex B (normative) - Qualification procedure for spaces within
        test rooms used in the determination of sound power
        levels and sound energy levels of specific noise
        sources
Annex C (normative) - Calculation of A-weighted sound power
        levels and A-weighted sound energy levels from
        one-third-octave band levels
Annex D (normative) - Array of microphone positions on a
        spherical measurement surface in a free field
Annex E (normative) - Arrays of microphone positions on a
        hemispherical measurement surface in a hemi-free field
Annex F (normative) - Coaxial circular paths of microphones
        on a hemispherical measurement surface in a hemi-free
        field
Annex G (normative) - Meridional paths of microphones on a
        hemispherical measurement surface in a hemi-free field
Annex H (normative) - Spiral paths of microphones on a
        hemispherical measurement surface in a hemi-free field
Annex I (informative) - Guidance on the development of information
        on measurement uncertainty
Bibliography

BS ISO 3745

Committee	EH/1/4
DocumentType	Draft
Pages	73
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN ISO 3745 : 2012

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 4871:1996	Acoustics — Declaration and verification of noise emission values of machinery and equipment
IEC 61183:1994	Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters
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 3747:2010	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
ISO 3740:2000	Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards
ISO 140-3:1995	Acoustics — Measurement of sound insulation in buildings and of building elements — Part 3: Laboratory measurements of airborne sound insulation of building elements
ISO 9613-1:1993	Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
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 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
IEC 61260:1995	Electroacoustics - Octave-band and fractional-octave-band filters
ISO 11201:2010	Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections
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