BS EN 60118-8-2005 电声学.助听器.第8部分:模拟现场工作条件下助听器工作特性的测量方法

标准号：BS EN 60118-8-2005
中文标准名称：电声学.助听器.第8部分:模拟现场工作条件下助听器工作特性的测量方法
英文标准名称：Electroacoustics - Hearing aids - Part 8: Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions
标准类型：L31
发布日期：2006/2/14 12:00:00
实施日期：2006/2/14 12:00:00
中国标准分类号：L31
国际标准分类号：11.180.15
引用标准：IEC 60118-0-1983;IEC 60263;IEC 60711;IEC 60959
适用范围：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