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    I.S. EN ISO 389-8:2004

    Current The latest, up-to-date edition.

    ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 8: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND CIRCUMAURAL EARPHONES

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2004

    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)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Specifications
    Annex A (informative) Notes on the derivation of the
                          reference equivalent threshold
                          sound pressure levels for the
                          circumaural audiometric earphone
                          HDA 200
    Annex B (informative) Sound attenuation of the earphone
                          HDA 200
    Annex C (informative) Correction figures for free-field
                          equivalent output of the circumaural
                          earphone HDA 200
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes reference equivalent threshold sound pressure levels (RETSPLs) for pure tones in the frequency range from 125 Hz to 8 kHz. Applicable to the calibration of air conduction audiometers equipped with a particular model of circumaural earphones (SENNHEISER HDA 200).

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current
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