Acoustics — Reference zero for the calibration of audiometric equipment — Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
NORMA vydaná dňa 14.5.2004
Designation standards: ISO 389-8:2004
Publication date standards: 14.5.2004
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: International technical standard
Kategória: Technické normy ISO