DIN/VDI Standards Committee Acoustics, Noise Control and Vibration Engineering
DIN EN 60318-3
Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry (IEC 60318-3:2014); German version EN 60318-3:2015
Akustik - Simulatoren des menschlichen Kopfes und Ohres - Teil 3: Akustischer Kuppler zur Kalibrierung von supra-auralen Audiometrie-Kopfhörern (IEC 60318-3:2014); Deutsche Fassung EN 60318-3:2015
Overview
This part of IEC 60318 specifies an acoustic coupler for the measurement of supra-aural audiometric earphones in the frequency range from 125 Hz to 8 000 Hz. The sound pressure developed by an earphone is not, in general, the same in the coupler as in a person's ear. However, the acoustic coupler can be used as an objective and reproducible means of measuring the output of supra-aural earphones. It can be used for specifying reference equivalent threshold sound pressure levels for the calibration of audiometers. The responsible committee is Joint Subcommittee GUK 821.6 "Hörgeräte und audiometrische Messtechnik" ("Hearing aids and audiometric measurements") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.
