IEC 60711 Replaced
IEC 60711:1981
Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts
Specifies an occluded-ear simulator, intended for the calibration of insert earphones in the frequency range 100 Hz to 10 000 Hz in terms of the sound pressure at the eardrum.
CHFÂ 80.-
This publication has been replaced by:
IEC 60318-4:2010