SN EN ISO 389-1:2018現行
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)
出版：Swiss Standards
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基本信息
標準編號： SN EN ISO 389-1:2018
標準類別：Standard
出版單位：Swiss Standards
標準頁數：0
標準簡介
ISO 389-1:2017 specifies a standard reference zero for the scale of hearing threshold level applicable to pure-tone air conduction audiometers, to promote agreement and uniformity in the expression of hearing threshold level measurements throughout the world.
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