AC40 RETSPL-HL Tabel
Transducer
DD45
10 Ω
Impedance
Coupler
6ccm
RETSPL
Speech
20
Speech Equ.FF.
3.5
Speech Non-linear
6
Speech noise
20
Speech noise Equ.FF.
3.5
Speech noise Non-linear
6
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
HDA200 (G
-G
) ANSI S3.6 2010 and ISO 389-8 2004.
F
C
HDA300 (G
-G
) PTB report 2013.
F
C
DD450 (GF-GC) ANSI S3.6 2018 and ISO 389-8 2004.
IEC Speech level IEC60645-2 1997 (acoustical linear weighting)
IEC Speech Equivalent free field level (G
IEC Speech Not linear level 1 kHz RETSPL (DD45-TDH50-HDA200-HDA300) and EAR 3A – IP30 - B71- B81 IEC60645-2 1997 (no
weighting)
Transducer
DD45
10 Ω
Impedance
Coupler
6ccm
Max HL
Speech
110
Speech Equ.FF.
115
Speech Non-linear
120
Speech noise
100
Speech noise Equ.FF.
115
Speech noise Non-linear
115
White noise in speech
95
IEC Speech RETSPL
TDH39
HDA280
HDA200
10 Ω
37 Ω
40 Ω
6ccm
6ccm
Artificial ear
Artificial ear
RETSPL
RETSPL
RETSPL
20
20
20
0.5
6.5
3.5
7
7.5
5.5
20
20
20
0.5
6.5
3.5
7
7.5
5.5
22.5
22.5
22.5
-G
) from IEC60645-2 1997 (acoustical equivalent sensitivity weighting)
F
C
IEC Speech max HL
TDH39
HDA280
HDA200
10 Ω
37 Ω
40 Ω
6ccm
6ccm
Artificial ear
Artificial ear
Max HL
Max HL
Max HL
110
100
90
120
110
100
120
120
110
100
95
85
115
105
95
115
120
105
95
95
90
DD65 v2
DD450
HDA300
EAR3A
10 Ω
23 Ω
40 Ω
Artificial
Artificial
ear
ear
RETSPL
RETSPL
RETSPL
RETSPL
20
20
20
1,5
3,5
1
4,5
5,5
2
20
20
20
1,5
3,5
1
4,5
5,5
2
22,5
22,5
22.5
DD65 v2
DD450
HDA300
10 Ω
23 Ω
40 Ω
Artificial
Artificial ear
ear
Max HL
Max HL
Max HL
95
90
95
110
100
110
110
110
120
90
85
90
100
95
110
105
105
120
95
90
95
IP30
EAR5A
B71
10 Ω
10 Ω
10 Ω
10 Ω
2ccm
2ccm
2ccm
Mastoid
RETSPL
RETSPL
RETFL
20
20
20
55
20
20
20
55
22.5
22.5
22.5
57.5
EAR3A
IP30
EAR5A
B71
10 Ω
10 Ω
10 Ω
10 Ω
2ccm
2ccm
2ccm
Mastoid
Max HL
Max HL
Max HL
Max HL
100
100
100
60
90
90
90
50
85
85
85
55
B81
12.5 Ω
Mastoid
RETFL
55
55
57.5
B81
12.5 Ω
Mastoid
Max HL
60
50
60
