This unit is a 3-cavity coupler type dummy of the human ear with a similar acoustic impedance of the human ear. This artificial ear is designed to comply with IEC60318-1 (IEC60318) standard.
As this unit incorporates a preamplifier and wide frequency characteristics, it can be used for calibration and frequency response measurement of telephone headsets and ear helix earphones.
This unit is designed to match with the OMC-58 1/2-inch sound pressure type condenser microphone which is separately available from ONSOKU.
This unit is occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts.
This ear simulator is designed to comply with IEC-60318-4 (IEC60711) standard.