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NA 022

DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE

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DIN EN ISO 389-4 [CURRENT] references following documents:

Document number Edition Title
DIN EN ISO 389-2 1996-10 Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994); German version EN ISO 389-2:1996 More 
EN ISO 389-2 1996-08 Acoustics - Reference zero for the calbration of audiometric equipment - Part 2: Reference equivalent treshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994) More 
ISO 389-2 1994-07 Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones More