Acoustic equipment
Auditory threshold
Measuring instruments
Acoustic measurement
Earphones
Hearing (auditory perception)
Reference conditions
Airborne noise
Sound intensity
Single
Artificial ears
Calibration
Audiometry
Couplers
Acoustics
Acoustic engineering
Frequencies
Link: BS EN ISO 389-1:2018 Acoustics. Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
Source: BSI Standards
