AS IEC 60645.1 pdf download Electroacoustics—Audiological equipment Part 1: Pure-tone audiometers (IEC 60645-1:2001, MOD) 1Scope and object This part of IEC 60645 specifies general requirements for audiometers and particularrequirements for pure-tone audiometers designed for use in determining hearing thresholdlevels,in comparison with standard reference threshold levels by means of psychoacoustictest methods. The object of this lnternational Standard is to ensure: a)...