Hlavní stránka>BS EN 60118-8:2005 Electroacoustics. Hearing aids Methods of measurement of performance characteritics of hearing aids under simulated in situ working conditions
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sklademVydáno: 2006-02-14
BS EN 60118-8:2005
Electroacoustics. Hearing aids Methods of measurement of performance characteritics of hearing aids under simulated in situ working conditions
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This standard BS EN 60118-8:2005 Electroacoustics. Hearing aids is classified in these ICS categories:
17.140.50 Electroacoustics
Describes methods for a test which simulates the acoustical effects of a median adult wearer on the performance of a hearing aid. 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
