DS DS/EN 60645-1
DS DSEN 60645-1 2002-JUL-01 Electroacoustcs - Audologcal equpment - Part 1 Pure-tone audometers
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This standard specifies general requirements for audiometers and particular requirements for pure-tone audiometers designed for use in determining hearing threshold levels, in comparison with standard reference threshold level, by means of psychoacoustic test methods.