IEC 60645-1 Ed. 4.0現行
Electroacoustics - Audiometric equipment Part 1: Equipment for pure-tone and speech audiometry
出版：International Electrotechnical Committee
專家解讀視頻
基本信息
標準編號： IEC 60645-1 Ed. 4.0
發布時間：2017/3/14 0:00:00
標準類別：Standard
出版單位：International Electrotechnical Committee
標準頁數：90
標準簡介
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.
