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. Reference levels for narrow-band masking noise.
Translate name
STANDARD published on 15.7.1999
Designation standards: BS EN ISO 389-4:1999
Publication date standards: 15.7.1999
SKU: NS-966019
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: British technical standard
Category: Technical standards BS
Medical equipment in generalNoise with respect to human beings
ISBN: 0 580 23599 8 Status: Under Review
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: 2026-10-21 (Number of items: 2 307 910)
© Copyright 2026 NORMSERVIS s.r.o.