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  • BS EN ISO 4869-2:1995

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    Acoustics. Hearing protectors Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  03-12-2018

    Language(s):  English

    Published date:  28-09-2007

    Publisher:  British Standards Institution

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

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Definitions
    4 Measurement of sound attenuation of hearing protectors
    5 Calculation of the assumed protection value APV[fx] of a
      hearing protector for a selected protection performance
    6 Octave-band method
    7 HML method
    8 SNR method
    Annex A (informative) Example of the calculation of the
            assumed protection values, APV[fx]
    Annex B (informative) Example of the calculation of L'[Ax]
            according to the octave-band method
    Annex C (informative) Example of calculation and use of H,
            M and L values
    Annex D (informative) Example of the calculation and use
            of SNR values
    Annex E (informative) Bibliography
    Annex ZA (normative) Normative references to international
             publications with their relevant European publications

    Abstract - (Show below) - (Hide below)

    Describes three methods of estimating the A weighted sound pressure levels effective when hearing protectors are worn. Coverage includes: Octave-band method, HML method, and SNR method. Also gives detailed tables.

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

    Committee EH/1/1
    Development Note Renumbers and supersedes BS ISO 4869-2. 1995 Version incorporates amendment 8935 to BS ISO 4869-2. Supersedes 87/55121 DC. (10/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Superseded By
    Supersedes

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

    DEFSTAN 00-27/3(2015) : 2015 THE MEASUREMENT OF IMPULSE NOISE FROM MILITARY WEAPONS, EXPLOSIVES AND PYROTECHNICS; AND SELECTION OF HEARING PROTECTION

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

    ISO 4869-1:1990 Acoustics Hearing protectors Part 1: Subjective method for the measurement of sound attenuation
    EN 24869-1 : 1992 ACOUSTICS - HEARING PROTECTORS - SUBJECTIVE METHOD FOR THE MEASUREMENT OF SOUND ATTENUATION
    IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
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