Interacoustics AA222 Instructions For Use Manual page 82

AA222 Instructions for Use – US
Transducer DD45
10 Ω
Impedance
Coupler 6ccm
RETSP
Speech
Speech Equ.FF.
Speech Non-linear
Speech noise
Speech noise Equ.FF.
Speech noise Non-
linear
White noise in speech 22.5
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)
TDH39 HDA280
10 Ω 37 Ω
Artificial
6ccm 6ccm
RETSP RETSP
L L L
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
-G
F C
IEC Speech RETSPL
DD450 HDA300 EAR3A
40 Ω 23 Ω 10 Ω
Artificial
ear ear 2ccm
RETSP RETSP
L RETSPL L
20 20
3.5 1
5.5 2 20
20 20
3.5 1
5.5 2 20
22.5 22.5 22.5
) from IEC60645-2 1997 (acoustical equivalent sensitivity
IP30 EAR5A CIR
10 Ω 10 Ω 68 Ω
2ccm 2ccm 2ccm
RETSP RETSP RETSP
L L L
20 20 20
20 20 20
22.5 22.5 22.5
Page 76
B71 B81
10 Ω 12.5 Ω
Mastoi Mastoi
d d
RETFL RETFL
55 55
55 55
57.5 57.5