GB/T 4854.4-1999

Acoustics--Reference zero for the calibration of audiometric equipment--Part 4:Reference levels for narrow-band masking noise

STANDARD published on 8.3.1999

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The information about the standard:

Designation standards: GB/T 4854.4-1999
Publication date standards: 8.3.1999
Country: Chinese technical standard
Category: Technical standards GB