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About This Item
Document History
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DIN EN ISO 389-1
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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); German version EN ISO 389-1:2018- Most Recent
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DIN EN ISO 389-1 - DRAFT
Draft Document - Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent treshold sound pressure levels for pure tones and supra-aural earphones (ISO/DIS 389-1:2016); German version prEN ISO 389-1:2016- Historical Version
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DIN EN ISO 389-1
Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent treshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:1998); English version of DIN EN ISO 389-1- Historical Version