• I.S. EN ISO 389-1:2018

    Current The latest, up-to-date edition.

    ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - PART 1: REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND SUPRA-AURAL EARPHONES (ISO 389-1:2017)

    Publisher:  National Standards Authority of Ireland

    Published: 

    Available Formats:  PDF - English, Hardcopy - English
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