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  • CEI EN 61094-3 : 1997

    Current The latest, up-to-date edition.

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

    Available format(s):  Hardcopy, PDF

    Language(s):  English - Italian

    Published date:  01-01-1997

    Publisher:  Comitato Elettrotecnico Italiano

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

    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.

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

    Committee CT 29/87
    Development Note Classificazione CEI 29-28 (09/2001) 1ED 1997 Edition is valid until 19-07-2019. (04/2017)
    Document Type Standard
    Publisher Comitato Elettrotecnico Italiano
    Status Current

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

    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 61094-2:2009 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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