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    I.S. EN ISO 4869-2:1996

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 - HEARING PROTECTORS - PART 2: ESTIMATION OF EFFECTIVE A-WEIGHTED SOUND PRESSURE LEVELS WHEN HEARING PROTECTORS ARE WORN

    Available format(s):  Hardcopy, PDF

    Superseded date:  13-12-2018

    Language(s):  English

    Published date:  01-01-1996

    Publisher:  National Standards Authority of Ireland

    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.

    Dates of withdrawal of national standards are available from NSAI.

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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

    Abstract - (Show below) - (Hide below)

    Specifies three methods (the octave-band, HML and SNR methods) of estimating the A-weighted sound pressure levels effective when heating protectors are worn.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

    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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