IEC 60118-4 Ed. 3.1现行
Electroacoustics - Hearing aids Part 4: Induction-loop systems for hearing aid purposes - System performance requirements
出版：International Electrotechnical Committee
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基本信息
标准编号： IEC 60118-4 Ed. 3.1
发布时间：2017/11/9 0:00:00
标准类别：Standard
出版单位：International Electrotechnical Committee
标准页数：236
标准简介
Pertains to audio-frequency induction-loop systems producing an alternating magnetic field at audio frequencies and intended to provide an input signal for hearing aids operating with an induction pick-up coil (telecoil).
本标准替代的旧标准
