GOST R ISO 389-2-2011 State system for ensuring the uniformity of measurements Acoustics Reference zero for the calibration of audiometric equipment Part 2 Reference equivalent thrr in.pdf
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1、 2 ISO 389-2:1994Acoustics Reference zero for the calibration of audiometric equipment Part 2:Reference equivalent threshold sound pressure levels for pure tones and insert earphones(IDT) 389-22011 27 2002 . 184- , 1.02004 . 1 - ( ) - , 42 358 3 - 1 2011 . 671-4 389-2:1994 . - . 2. (ISO 389-2:1994Ac
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4、. - , . 389-1:1998 . . 1. - ( 389-1:1998, Acoustics Reference zero for the calibration of audiometric equipment Part 1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones) 60318-4:2010 . . 4. - , (IEC 60318-4:2010, Electroacoustics Simulators of human head a
5、nd ear Part 4: Occluded-ear simulatorfor the measurement of earphones coupled to the ear by means of ear inserts) 60318-5:2006 . . 5. - 2 3 , - (IEC 60318-5:2006, Electroacoustics Simulators of human head andear Part 5: 2 cm3coupler for the measurement of hearing aids and earphones coupled to the ea
6、r by means ofear inserts)3 389-1, - :3.1 (ear insert): , . - .1 389-220113.2 (insert earphone): , - , .3.3 (ear simulator): , , . , - . , - .3.4 (occluded-ear simulator): , - . 60318-4.3.5 ear-insert simulator (earmould substitute, earmould simulator): , - .3.6 ( ) acoustic coupler for insertearphon
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