We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
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
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
Do you want to make sure you use only the valid technical standards?
We can offer you a solution which will provide you a monthly overview concerning the updating of standards which you use.
Would you like to know more? Look at this page.
Latest update: 2023-03-27 (Number of items: 2 803 549)
© Copyright 2023 NORMSERVIS s.r.o.