IEC 60645-1 Ed. 4.0现行
Electroacoustics - Audiometric equipment Part 1: Equipment for pure-tone and speech audiometry
出版：International Electrotechnical Committee
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基本信息
标准编号： IEC 60645-1 Ed. 4.0
发布时间：2017/3/14 0:00:00
标准类别：Standard
出版单位：International Electrotechnical Committee
标准页数：90
标准简介
Describes general requirements for audiometers designed for use in determining hearing threshold levels, relative to standard reference threshold levels established by means of psychoacoustic test methods, and those designed to perform psychoacoustic tests using speech material.
