Electroacoustic-Measurement Microphones-Part 7: Values for the difference between free-field and pressure sensitivity levels of laboratory standard microphones
Acoustics—Satistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
Acoustics—Reference zero for the calibration of audiometric equipment—Part 3:Reference equivalent threshold vibratory force levels for pure tones and bone vibrators