000			01431nam a22001337a 4500
999			_c16229 _d16229
245			_aIEC 60645-5:2004-Electroacoustics - Audiometric equipment - Part 5 : _bInstruments for the measurement of aural acoustic impedance/admittance
250			_a1.0
260			_aGeneva : _bInternational Electrotechnical Commission, _c2004.
300			_a57 p.
505			_aApplies to instruments designed primarily for the measurement of acoustic impedance/admittance in the human external acoustic meatus using a stated probe tone. It is recognized that other probe signals may also be used. The standard defines the characteristics to be specified by the manufacturer, lays down performance specifications for three types of instruments and specifies the facilities to be provided on these types. This standard describes methods of test to be used for approval testing and guidance on methods for undertaking routine calibration. The purpose of this standard is to ensure that measurements made under comparable test conditions with different instruments complying with the standard will be consistent. The standard is not intended to restrict development or incorporation of new features, nor to discourage innovative approaches. This first edition of IEC 60645-5 cancels and replaces the first edition of IEC 61027, published in 1991, and constitutes a technical revision.
650			_aElectroacoustics
650			_aAudiometric
942			_cST