
Electro-acoustics - Simulators Of Human Head And Ear - Part 3: Acoustic Coupler For The Calibration Of Supra-aural Earphones Used In Audiometry
出版:Nederlands Normalisatie Instituut

專家解讀視頻
Specifies an acoustic coupler for loading supra-aural audiometric earphones as specified in ISO 389-1 with specified acoustic impedance, when calibrating audiometers, in the frequency range of 125 Hz to 8000 Hz.
Supersedes NEN 10303 (08/2002)
IEC 60318-3 Ed. 1.0 - Identical