NEN EN IEC 60118-4 : 2015 AMD 1 2018现行
ELECTROACOUSTICS - HEARING AIDS - PART 4: INDUCTION-LOOP SYSTEMS FOR HEARING AID PURPOSES - SYSTEM PERFORMANCE REQUIREMENTS
出版：Netherlands Standards
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基本信息
标准编号： NEN EN IEC 60118-4 : 2015 AMD 1 2018
标准类别：Standard
出版单位：Netherlands Standards
标准页数：0
标准简介
Defines requirements for the field strength in audio-frequency induction loops for hearing aid purposes, which will give adequate signal-to-noise ratio without overloading the hearing aid. Also specifies the minimum frequency response requirements for acceptable intelligibility.
等同采用的国际标准
IEC 60118-4 : 3.1 - Identical
