Auditory threshold
Test equipment
Acoustoelectric devices
Audiology
Audiometers
Sound intensity
Audiofrequencies
Calibration
Acoustic equipment
Acoustic measurement
Hearing (auditory perception)
Control samples
Testing conditions
Audiometry
Link: BS EN ISO 389-7:2019 Acoustics. Reference zero for the calibration of audiometric equipment Reference threshold of hearing under free-field and diffuse-field listening conditions
Source: BSI Standards