State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 1. Reference equivalent threshold sound pressure levels of pure tones for supra-aural earphones
NORMA vydána dne 1.3.2024
Designation standards: GOST R ISO 389-1-2023
Publication date standards: 1.3.2024
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST