Acoustics - Reference zero for the calibration of audiometric equipment- Part 5: Reference equivalent threshold sound pressure levels for pure tone in the frequency range 8 kHz to 16 kHz
NORMA vydaná dňa 2.7.2008
Designation standards: GB/T 4854.5-2008
Publication date standards: 2.7.2008
Country: Chinese technical standard
Kategória: Technické normy GB