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4、d sound pressure levels for pure tones and supra-aural earphones) 60318-1 . . 1. (IEC 60318-1, Electroacoustics Simulators ofhuman head and ear Part 1: Ear simulator for the calibration of supra-aural and circumaural earphones) 60318-4 . . 4. , (IEC 60318-4, Electroacoustics Simulators of human head
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8、), monaural listening: - 18 25 -, .3.11 ; 1)reference threshold soundpressure level (RTSPL): - 18 25 -, .3.12 (peak-to-peak equivalent signal level): - , (. . ), .1) , RTSPL. , .2 389-620111 (. 3.2) - 1000 , (. 3.3) .2 .1)3 39,.3, , 9 , - .4 ( peSPL peVPL).3.13 ( ); () peak-to-peak equivalent refere
9、nce equivalent thresholdsound pressure level or vibratory force level (peRETSPL/peRETVFL): (). , , -, . , - - , - , . . .3.14 ; (peak-to-peak equivalent reference threshold sound pressure level peRETSPL): .4 (, -), (, , ) - ( , ). , , 13. - ( 46). 4.- ( 68) 1 , 20 1 (- ) ( 20 ), Sennheiser HDA 200 6
10、0318-128,0Maico BERAphone 33,0bTelephonics -39 31,0Beer DT 48 32,0bSennheiser HDA 280 31,5bEtymotic Research ER-2 60318-443,5bEtymotic Research ER-3A 35,5b 0,5 .b . 100 .1) .3 389-62011 2 , 20 1 - ( ) ( 20 ), KEF RDM1 WS2F 61094-1 20,0b 0,5 .b . 1 - 100 . 2 , , - . 3 , 20 1 - ( ) ( 1 ), Radioear B-71 60318-6 51,5b 0,5 .b .
