OS GSO IEC 60318-3:2014
IEC 60318-3:2014
Omani Standard
Current Edition
·
Approved on
25 December 2014
Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry
OS GSO IEC 60318-3:2014 Files
English
24 Pages
Current Edition
Reference Language
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OS GSO IEC 60318-3:2014 Scope
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 specif ying reference equivalent threshold sound pressure levels (RETSPL) for the calibration of audiometers.
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