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    I.S. EN ISO 11904-2:2004

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    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    ACOUSTICS - DETERMINATION OF SOUND IMMISSION FROM SOUND SOURCES PLACED CLOSE TO THE EAR - PART 2: TECHNIQUE USING A MANIKIN

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  30-09-2021

    Language(s):  English

    Published date:  01-01-2004

    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 Terms and definitions
    4 Measurement principle
    5 Instrumentation
      5.1 Manikin (head and torso simulator)
      5.2 Check of calibration
      5.3 Filters
    6 Determination of free-field or diffuse-field related
      equivalent continuous A-weighted sound pressure level
      6.1 Measurement of manikin sound pressure level
      6.2 Conversion to free-field or diffuse-field related
          sound pressure level
      6.3 A-weighting and summation
    7 Test report
    Annex A (informative) Example of sources of measurement
            uncertainty
    Annex B (informative) Example of an uncertainty analysis
    Bibliography

    Abstract - (Show below) - (Hide below)

    Provides basic framework measurement methods for sound immission from sound sources placed close to the ear.

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

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    Status Withdrawn
    Superseded By

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

    IEC 60942:2003 Electroacoustics - Sound calibrators
    IEC 60711:1981 Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts
    IEC 60268-7:2010 Sound system equipment - Part 7: Headphones and earphones
    EN 50332-1:2013 Sound system equipment: Headphones and earphones associated with personal music players - Maximum sound pressure level measurement methodology - Part 1: General method for "one package equipment"
    IEC 60268-1:1985 Sound system equipment. Part 1: General
    ISO 11904-1:2002 Acoustics — Determination of sound immission from sound sources placed close to the ear — Part 1: Technique using a microphone in a real ear (MIRE technique)
    IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
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