ISO 389-4:1994 (R2015)

Condition: New product

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

Author	ISO/TC 43 Acoustics
Editor	ISO
Document type	Standard
Format	Paper
Confirmation date	2015-07-30
Edition	1
ICS	13.140 : Noise with respect to human beings
Number of pages	4
Replace	ISO 8798:1987
Weight(kg.)	0.4000
Year	1990
Country	Switzerland