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  • EN 61094-3:2016/AC:2017-01

    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

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    Published date:  20-01-2017

    Publisher:  European Committee for Standards - Electrical

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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. Pertains to laboratory standard microphones meeting the requirements of IEC 61094-1.

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

    Committee SR 29
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    EN 61094-6:2005 Measurement microphones - Part 6: Electrostatic actuators for determination of frequency response
    EN 61094-8:2012/AC:2013 Measurement microphones — Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
    BS EN 61094-6:2005 Measurement microphones Electrostatic actuators for determination of frequency response
    CEI EN 61094-6 : 2005 MEASUREMENT MICROPHONES PART 6: ELECTROSTATIC ACTUATORS FOR DETERMINATION OF FREQUENCY RESPONSE
    BS EN 61094-8:2012 Electroacoustics. Measurement microphones Methods for determining the free-field sensitivity of working standard microphones by comparison
    CEI EN 61094-8 : 2013 ELECTROACOUSTICS - MEASUREMENT MICROPHONES - PART 8: METHODS FOR FREE-FIELD CALIBRATION OF WORKING STANDARD MICROPHONES BY COMPARISON
    UNE-EN 61094-8:2013 Measurement microphones. Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
    I.S. EN 61094-8:2012 MEASUREMENT MICROPHONES - PART 8: METHODS FOR DETERMINING THE FREE-FIELD SENSITIVITY OF WORKING STANDARD MICROPHONES BY COMPARISON (IEC 61094-8:2012 (EQV))
    I.S. EN 61094-6:2005 MEASUREMENT MICROPHONES - PART 6: ELECTROSTATIC ACTUATORS FOR DETERMINATION OF FREQUENCY RESPONSE

    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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