GOST R IEC 60118-8-2010 Electroacoustics Hearing aids Part 8 Methods of measurement of performance characteristics of hearing aids under simulated in situ working conditions《电声学 助听.pdf

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6、 characteristics) 60263 -(IEC60263,Scalesandsizesforplottingfrequencycharacteristicsandpolardiagrams) 60711 , - (IEC 60711, Occluded-ear simulator for the measurement of earphones coupled tothe ear by ear inserts)/ 60959 , , - (IEC/TR 60959, Provisionalhead and torso simulator for acoustic measureme

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