GB/T 4854.1-2004

Acoustics--Reference zero for the calibration of audiometric equipment--Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones

STANDARD published on 13.5.2004

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The information about the standard:

Designation standards: GB/T 4854.1-2004
Publication date standards: 13.5.2004
Country: Chinese technical standard
Category: Technical standards GB