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BS ISO 3744 : 1994 AMD 8936

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES USING SOUND PRESSURE - ENGINEERING METHOD IN AN ESSENTIALLY FREE FIELD OVER A REFLECTING PLANE
Superseded date

15-12-1995

Published date

06-12-2012

1 Scope
2 Normative references
3 Definitions
4 Acoustic environment
5 Instrumentation
6 Installation and operation of source under test
7 Measurement of sound pressure levels
8 Calculation of surface sound pressure level and
    sound power level
9 Information to be recorded
10 Information to be reported
Annexes
A Qualification procedures for the acoustic
    environment
B Microphone array on the hemispherical measurement
    surface
C Microphone array on the parallelepiped measurement
    surface
D Guidelines for the detection of impulsive noise
E Guidelines for the determination of the directivity
    index
F Bibliography

Specifies a method for measuring the sound pressure levels on a measurement surface enveloping a noise, in essentially free field conditions near one or more reflecting planes, in order to calculate the sound power level produced by the noise source. Coverage includes acoustic environment, measurement of sound pressure levels, instrumentation, and installation and operating of source under test. Also gives detailed definitions and annexes. BS AMD 8936 RENUMBERS THIS STANDARD

Committee
EPC/1
DevelopmentNote
Renumbered and superseded by BS EN ISO 3744. Supersedes BS 4196-4(1981) and 90/56052 DC. (10/2005)
DocumentType
Standard
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 3744:2010 Identical

BS EN 61063:1996 Acoustics. Measurement of airborne noise emitted by steam turbines and driven machinery

ISO 2204:1979 Acoustics Guide to International Standards on the measurement of airborne acoustical noise and evaluation of its effects on human beings
ISO 4871:1996 Acoustics — Declaration and verification of noise emission values of machinery and equipment
ISO 354:2003 Acoustics — Measurement of sound absorption in a reverberation room
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
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 7574-1:1985 Acoustics — Statistical methods for determining and verifying stated noise emission values of machinery and equipment — Part 1: General considerations and definitions
IEC 60225:1966 Octave, half-octave and third-octave band filters intended for the analysis of sounds and vibrations
ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
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 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
IEC 60804:2000 Integrating-averaging sound level meters

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