GOST R ISO 389-9-2014 State system for ensuring the uniformity of measurements Acoustics Reference zero for the calibration of audiometric equipment Part 9 Preferred test conditionthre.pdf
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1、 389-9 2014 9 ISO389-9:2009 Acoustics Reference zero for thecalibration of audiometric equipment Part 9:Preferred test conditions for thedetermination of reference hearing thresholdlevels (IDT) 389-92014 II 1 - - ( ) - , 4 2 358 3 - 11 2014 . 1545- 4 389-9:2009. - . 9. (ISO389-9:2009 Acoustics Refer
2、ence zero for the calibration of audio metric equipment Part 9:Preferredtestconditionsforthedeterminationofreferencehearingthresholdlevels). - - , - 5 1.02012 ( 8). ( 1 ) , - . () - - . , (gost.ru) , 2015 , - 389-92014 III / 43 , (), . - . , - , . , , - , , . . , . - , . 389-92014 1 9 State system f
3、or ensuring the uniformity of measurements.Acoustics. Reference zero for the calibration of audiometric equipment. Part 9.Preferred test conditions for the determination of reference hearing threshold levels 20151201 1 , -. 2 . - , . 389-1:1998 . . 1. - (ISO 389-1:1998, Acoustics Reference zero for
4、the calibration of audiometric equipment Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones) 389-2 . . 2. - (ISO 389-2, Acoustics Reference zero for the calibration of audiometric equipment Part 2: Refer-ence equivalent threshold sound pressure leve
5、ls for pure tones and insert earphones) 389-3 . . 3. (ISO 389-3, Acoustics Reference zero for the calibration of audiometric equipment Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators) 389-6 . . 6. (ISO 389-6, Acoustics Refer-ence zero for the calibration of audi
6、ometric equipment Part 6: Reference threshold of hearing for test sig-nals of short duration) 389-7 . . 7. - (ISO 389-7, Acoustics Reference zero for the calibration of audiometric equipment Part 7: Refer-ence threshold of hearing under free-field and diffuse-field listening conditions) 389-8 . . 8.
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