D-0133833-A – 2022/09
AD629 - Instructions for Use - EN
Page 50
Effective masking value is RETSPL / RETFL add 1/3 octave correction for Narrow-band noise from ANSI S3.6 2010 or ISO389-4
1994.
NB noise effective masking level
Transducer
DD45
TDH39
HDA280
HDA200
HDA300
DD450
EAR3A
IP30
EAR5A
B71
B81
Impedance
10 Ω
10 Ω
37 Ω
40 Ω
23 Ω
40 Ω
10 Ω
10 Ω
10 Ω
10 Ω
12.5 Ω
Coupler
6ccm
6ccm
6ccm
Artificial ear
Artificial ear
Artificial
ear
2ccm
2ccm
2ccm
Mastoid
Mastoid
EM
EM
EM
EM
EM
EM
EM
EM
EM
EM
EM
NB 125 Hz
51.5
49
42.5
34.5
31.0
34,5
30.0
30.0
30
NB 160 Hz
44.5
41.5
37.5
30
28.5
30
26
26
26
NB 200 Hz
37.5
35.5
33.5
26
26.5
26
22
22
22
NB 250 Hz
31
29.5
29
22
24
22
18
18
18
71
71
NB 315 Hz
26.5
24
25
19.5
20
19,5
16
16
16
68
68
NB 400 Hz
21.5
19
21
17.5
16
17,5
13
13
13
65
65
NB 500 Hz
17
15.5
17
15
12
15
9.5
9.5
9.5
62
62
NB 630 Hz
14
13.5
15.5
13
11
13
9
9
9
57.5
57.5
NB 750 Hz
11.5
12.5
14
11
9.5
11
7
7
7
53.5
53.5
NB 800 Hz
11.5
12
13.5
11
9
11
6.5
6.5
6.5
52
52
NB 1000 Hz
12
13
13.5
11.5
8
11,5
6
6
6
48.5
48.5
NB 1250 Hz
13
12.5
14.5
12
8.5
12
8
8
8
45
45
NB 1500 Hz
14
12.5
15.5
11.5
9
11,5
8
8
8
42.5
42.5
NB 1600 Hz
14
13
15
11.5
8.5
11,5
8
8
8
41.5
41.5
NB 2000 Hz
14
15
14
10.5
6
10,5
9
9
9
37
37
NB 2500 Hz
14
15.5
13
9
4
9
11
11
11
35.5
35.5
NB 3000 Hz
14
16
12.5
8.5
3
8,5
9.5
9.5
9.5
36
36
NB 3150 Hz
14
16
13
10
3.5
10
10
10
10
37
37
NB 4000 Hz
14
14.5
14.5
14.5
4.5
14,5
10.5
10.5
10.5
40.5
40.5
NB 5000 Hz
18
18
17
19
15.5
19
10
10
10
45
45
NB 6000 Hz
25.5
20.5
24
22
26
22
7
7
7
45
45
NB 6300 Hz
24
20
24
22.5
26.5
22,5
7
7
7
45
45
NB 8000 Hz
17
18
23
22.5
28
22,5
5
5
5
45
45
NB 9000 Hz
24
32.5
24
NB 10000 Hz
27
23
27
NB 11200 Hz
28
27
28
NB 12500 Hz
32.5
32
32,5
NB 14000 Hz
40
38.5
40
NB 16000 Hz
61
50.5
61
NB 18000 Hz
88
88
88
NB 20000 Hz
110
110
110
White noise
0
0
0
0
0
0
0
0
0
42.5
42.5
TEN noise
25
25
16
16