GOST R ISO 389-7-2011 State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 7. Reference threshold of hearing under free-field and diffuse-field listening conditions
ISO 8253-2 Acoustics - Audiometric test methods - Part 2: Sound field audiometry with pure-tone and narrow-band test signals
GOST R ISO 389-7-2011 history
2011GOST R ISO 389-7-2011 State system for ensuring the uniformity of measurements. Acoustics. Reference zero for the calibration of audiometric equipment. Part 7. Reference threshold of hearing under free-field and diffuse-field listening conditions