1.1 This part of IEC 61260 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61260-1:2014 for octave-band and fractional-octaveband filters. 1.2 Tests and test methods are applicable to class 1 and class 2 bandpass filters. The aim is to ensure that all testing laboratories use consistent methods to perform pattern-evaluation tests.dition 1.1 2017-04 CONSOLIDATED VERSION VERSION CONSOLIDéE colour inside Electroacoustics – Octave-band and fractional-octave-band filters – Part 2: Pattern-evaluation tests électroacoustique – Filtres de bande d'octave et de bande d'une fraction d'octave – Partie 2: Essais d'évaluation d'un modèle IEC 61260-2:2016-03+AMD1:2017-04 CSV(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright ？ 2017