標(biāo)準(zhǔn)號：BS EN 60118-8-2005
中文標(biāo)準(zhǔn)名稱：電聲學(xué).助聽器.第8部分:模擬現(xiàn)場工作條件下助聽器工作特性的測量方法
英文標(biāo)準(zhǔn)名稱：Electroacoustics - Hearing aids - Part 8: Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
標(biāo)準(zhǔn)類型：L31
發(fā)布日期：2006/2/14 12:00:00
實(shí)施日期：2006/2/14 12:00:00
中國標(biāo)準(zhǔn)分類號：L31
國際標(biāo)準(zhǔn)分類號：11.180.15
引用標(biāo)準(zhǔn)：IEC 60118-0-1983;IEC 60263;IEC 60711;IEC 60959
適用范圍：The purpose of this part of IEC 60118 is to describe methods for a test which simulates theacoustical 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; itdescribes a simplified method for simulated in situ measurements of hearing aids and adescription for determination of the directivity index (DI) of directional microphones in hearingaids in the horizontal plane.In addition this second edition now specifies tolerances. Conformance to the specifications inthis International Standard is demonstrated only when the result of a measurement, extendedby the actual expanded uncertainty of measurement of the testing laboratory, lies fully withinthe tolerances specified in this International Standard extended by the values for Umax