This standard specifies an occluded-ear simulator intended for the calibration of insert ear-phones in the frequency range 100 Hz to 10000 Hz in terms of the sound pressure at the ear-drum.
The occluded-ear simulator is also designed as the basis for a l?ter extension intended to simulate the complete ear canal for the calibration of earphones coupled to the ear by means of open mould fittings or similar devices. A document for such a device is under considera-tion.
SIS SS IEC 711:1985 history
1985SIS SS IEC 711:1985 Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts