OS GSO IEC 60118-8:2014
IEC 60118-8:2005
Omani Standard
Current Edition
·
Approved on
25 December 2014
Electroacoustics - Hearing aids - Part 8: Methods of measurement of performance characteristics of hearing aids under simulated [in situ] working conditions
OS GSO IEC 60118-8:2014 Files
English
63 Pages
Current Edition
Reference Language
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OS GSO IEC 60118-8:2014 Scope
The purpose of this part of IEC 60118 is to describe methods for a test which simulates the acoustical effects of a median adult wearer on the performance of a hearing aid. It establishes certain guidelines for simulated in situ measurements of hearing aids; it describes a simplified method for simulated in situ measurements of hearing aids and a description for determination of the directivity index (DI) of directional microphones in hearing aids in the horizontal plane.
In addition this second edition now specifies tolerances. Conformance to the specifications in this International Standard is demonstrated only when the result of a measurement, extended by the actual expanded uncertainty of measurement of the testing laboratory, lies fully within the tolerances specified in this International Standard extended by the values for Umax
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