01213nam a22001097a 4500245011700000250000800117260006400125300001000189505086600199650002101065650001701086  aIEC 61669:2015-Electroacoustics - Measurement of real-ear acoustical performance characteristics of hearing aids  a2.0  aGeneva :bInternational Electrotechnical Commission,c2015.  a72 p.  aIEC 61669:2015 gives recommendations and requirements for the measurement and estimation of the real-ear acoustical performance characteristics of air-conduction hearing aids and for the measurement of certain acoustic properties of the ear related to the application of hearing aids. Measurements of real-ear acoustical characteristics of hearing aids which apply non-linear or analytical processing techniques are valid only for the test signals used and conditions employed. The purpose of this standard is to ensure that measurements of real-ear acoustical performance characteristics of a given hearing aid on a given human ear can be replicated in other locations with other test equipment. This second edition cancels and replaces the first edition of IEC 61669:2001 and the first edition of ISO 12124:2001. This edition constitutes a technical revision.  aElectroacoustics  aHearing aids