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    I.S. EN 61094-3:2016

    Current The latest, up-to-date edition.

    ELECTROACOUSTICS - MEASUREMENT MICROPHONES - PART 3: PRIMARY METHOD FOR FREE-FIELD CALIBRATION OF LABORATORY STANDARDMICROPHONES BY THE RECIPROCITY TECHNIQUE

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2016

    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)

    National Foreword
    FOREWORD
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Reference environmental conditions
    5 Principles of free-field calibration by reciprocity
    6 Factors influencing the free-field sensitivity
    7 Calibration uncertainty components
    Annex A (informative) - Values for the position of the
            acoustic centre
    Annex B (normative) - Values of the air attenuation
            coefficient
    Annex C (informative) - Environmental influence on
            the sensitivity of microphones
    Annex D (informative) - Application of time selective
            techniques for removal of unwanted reflections
            and acoustic interference between microphones
    Bibliography
    Annex ZA (normative) - Normative references to international
             publications with their corresponding European
             publications

    Abstract - (Show below) - (Hide below)

    Defines a primary method of determining the complex free-field sensitivity of laboratory standard microphones so as to establish a reproducible and accurate basis for the measurement of sound pressure under free-field conditions. Pertains to laboratory standard microphones meeting the requirements of IEC 61094-1.

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

    Development Note Supersedes IEC 60486. (02/2002) For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes

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

    EN 61094-8:2012/AC:2013 Measurement microphones — Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
    IEC TS 61094-7:2006 Measurement microphones - Part 7: Values for the difference between free-field and pressure sensitivity levels of laboratory standard microphones
    EN 61094-1:2000 Measurement microphones - Part 1: Specifications for laboratory standard microphones
    IEC 61094-1:2000 Measurement microphones - Part 1: Specifications for laboratory standard microphones
    EN 61094-2:2009 Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
    ISO 9613-1:1993 Acoustics Attenuation of sound during propagation outdoors Part 1: Calculation of the absorption of sound by the atmosphere
    IEC 61094-8:2012 Measurement microphones - Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
    IEC 61094-2:2009 Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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