Interacoustics AA222 Instructions For Use Manual page 173

AA222 Руководство по эксплуатации – RU
Transducer DD45
Impedance
Coupler 6ccm
RETSPL RETSPL RETSPL
Speech
Speech Equ.FF.
Speech Non-linear
Speech noise
Speech noise Equ.FF.
Speech noise Non-linear
White noise in speech
DD45 (G -G ) PTB-DTU report 2009-2010.
F C
TDH39 (G -G ) IEC60645-2 1997.
F C
HDA280 (G -G ) PTB report 2004.
F C
HDA300 (G -G ) PTB report 2013.
F C
IEC Speech level IEC60645-2 1997 (acoustical linear weighting)
IEC Speech Equivalent free field level (G
weighting)
IEC Speech Not linear level 1 kHz RETSPL (DD45-TDH50-HDA300) and EAR3A – IP30 - B71- B81
IEC60645-2 1997 (no weighting)
IEC Speech RETSPL
TDH39 HDA280
10 Ω 10 Ω 37 Ω
6ccm 6ccm
20 20 20
3.5 0.5 6.5
6 7 7.5
20 20 20
3.5 0.5 6.5
6 7 7.5
22.5 22.5 22.5
-G
F C
HDA300 EAR3A IP30
23 Ω 10 Ω 10 Ω
Artificial ear 2ccm 2ccm
RETSPL RETSPL RETSPL RETSPL
20
1
2 20 20
20
1
2 20 20
22.5 22.5 22.5
) from IEC60645-2 1997 (acoustical equivalent sensitivity
EAR5A CIR B71
10 Ω 68 Ω 10 Ω
2ccm 2ccm Mastoid Mastoid
RETSPL RETFL
20 20 55
20 20 55
22.5 22.5 57.5
Стр. 78
B81
12.5 Ω
RETFL
55
55
57.5