UNE-EN ISO 389-4:1999

ACOUSTICS. REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT. PART 4: REFERENCE LEVELS FOR NARROW-BAND MASKING NOISE (ISO 389-4:1994)

STANDARD published on 18.11.1999

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Spanish -

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Spanish -

Print design (72.00 USD)

The information about the standard:

Designation standards: UNE-EN ISO 389-4:1999
Publication date standards: 18.11.1999
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: Spanish technical standard
Category: Technical standards UNE