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  • BS EN 61183 : 1995

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    ELECTROACOUSTICS - RANDOM-INCIDENCE AND DIFFUSE-FIELD CALIBRATION OF SOUND LEVEL METERS

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1995

    Publisher:  British Standards Institution

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

    1 Scope
    2 Normative references
    3 Definitions
    4 Calibration method based on free-field measurements
    5 Calibration method based on diffuse-field
        measurements
    Annexes
    A (Informative) Practical calibration method based on
        free-field measurements
    B (Informative) Pra?ctical calibration method based on
        diffuse-field measurements
    ZA (Normative) Other international publications quoted
        in this standard with the references of the relevant
        European publications
    Tables
    A.1 Adjustment factors K(0) for calculation of random-
        incidence sensitivity level
    B.1 Characteristics of a type LS2aP/LS2F microphone
    Figures
    1 Reference coordinate system for random-incidence
        sensitivity level calibration based on free-field
        measurements
    2 Reference coordinate system for the purpose of
        practical measurement of random-incidence sensitivity
        level based on free-field measurements
    A.1 A sound level meter located with its microphone at
        the centre of a sphere and a reference direction for
        sound incidence aligned with the X-axis
    A.2 A sound level meter under test mounted on a turntable
        to obtain incidence of sound from different directions
        in the X-y plane
    A.3 Method of simulating rotation in the X-Z plane by 90
        degrees rotation of the sound level meter under test
        around an axis coincident with the reference
        direction, and then rotation around a circle in the
        X-Y plane as in figure A.2

    Abstract - (Show below) - (Hide below)

    Describes a free-field calibration method for determining random-incidence sensitivity levels of sound level meters.

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

    Committee EPL/29
    Development Note Also numbered as IEC 61183 Supersedes 90/22425 DC (11/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

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

    BS EN 60651 : 1994 SPECIFICATION FOR SOUND LEVEL METERS
    ISO 266:1997 Acoustics Preferred frequencies
    BS 4727-3:GRP08(1995) : 1995 GLOSSARY OF ELECTROTECHNICAL, POWER, TELECOMMUNICATION, ELECTRONICS, LIGHTING AND COLOUR TERMS - TERMS PARTICULAR TO TELECOMMUNICATIONS AND ELECTRONICS - ACOUSTICS AND ELECTROACOUSTICS
    BS EN 60804:2001 Integrating-averaging sound level meters
    ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
    ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
    IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
    BS EN 61094-1 : 2001 SPECIFICATION FOR MEASUREMENT MICROPHONES - PART 1: SPECIFICATIONS FOR LABORATORY STANDARD MICROPHONES
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