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  • BS EN ISO 11904-2:2004

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 immission from sound sources placed close to the ear Technique using a manikin

    Available format(s):  Hardcopy, PDF

    Superseded date:  23-09-2023

    Language(s):  English

    Published date:  18-11-2004

    Publisher:  British Standards Institution

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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)

    States basic framework measurement methods for sound immission from sound sources placed close to the ear. Applies to exposure to sound from sources close to the ear, for example during equipment tests or at the workplace to sound from earphones or hearing protectors with audiocommunication facilities.

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

    Committee EH/1/1
    Development Note Supersedes 01/565186 DC. (12/2004)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    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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