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EVS-EN 60318-3:2002

Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry

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Kehtetu alates 04.03.2015
Alusdokumendid
IEC 60318-3:1998; EN 60318-3:1998
Tegevusala (ICS grupid)
17.140.50 Elektroakustika
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Staatus
Kuupäev
Tüüp
Nimetus
04.03.2015
Põhitekst
01.01.2003
Põhitekst
This International Standard describes an acoustic coupler for loading supra-aural audiometric earphones as specified in ISO 389-1 (to be published) with a specified acoustic impedance, when calibrating audiometers, in the frequency range of 125 Hz to 8000 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 IEC recommends its use as a simple and ready means for the exchange of specifications on audiometers and for the calibration of specified earphones used in audiometry.

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