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  • BS ISO 3744 : 1994 AMD 8936

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES USING SOUND PRESSURE - ENGINEERING METHOD IN AN ESSENTIALLY FREE FIELD OVER A REFLECTING PLANE

    Available format(s): 

    Superseded date:  15-12-1995

    Language(s): 

    Published date:  06-12-2012

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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

    General Product Information - (Show below) - (Hide below)

    Committee EPC/1
    Development Note Renumbered and superseded by BS EN ISO 3744. Supersedes BS 4196-4(1981) and 90/56052 DC. (10/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

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

    Standards Referencing This Book - (Show below) - (Hide below)

    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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