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Svantek SV 971A
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SV 971A User Manual – Appendixes
218
Frequency
ACO 7152 typical
Free Field response
SV 971A typical
Free Field response
SV 971A
Case Effect
Uncertainty
(IEC 62585:2012)
[Hz]
[dB]
[dB]
[dB]
[dB]
10 292
-0.12
0.13
0.25
0.35
10 593
-0.16
0.04
0.20
0.35
10 902
-0.12
-0.01
0.11
0.35
11 220
-0.11
0.16
0.27
0.35
11 548
-0.09
0.19
0.28
0.35
11 885
-0.08
0.24
0.32
0.35
12 232
-0.04
0.23
0.28
0.35
12 589
-0.11
0.30
0.41
0.35
12 957
-0.10
0.21
0.32
0.35
13 335
-0.14
-0.13
0.01
0.35
13 725
-0.08
-0.22
-0.14
0.35
14 125
-0.06
-0.18
-0.12
0.35
14 538
0.03
0.22
0.19
0.35
14 962
0.12
0.50
0.38
0.35
15 399
0.15
0.47
0.33
0.35
15 849
0.13
0.24
0.11
0.35
16 312
0.12
-0.06
-0.18
0.35
16 788
0.10
-0.02
-0.13
0.35
17 278
0.14
0.10
-0.04
0.35
17 783
0.32
0.48
0.16
0.35
18 302
0.43
0.64
0.21
0.35
18 836
0.56
0.83
0.28
0.35
19 387
0.71
0.69
-0.02
0.35
19 953
0.61
0.48
-0.13
0.35
Table C.1.8. SV 971A Free Field corrections (combined: Microphone plus Case Effect) for electrostatic
actuator and 0 deg incidence angle
[dB]
Frequency [Hz]
20
25
31.5
40
50
63
80
100
125
160
200
250
315
400
500
630
800
Correction
factors
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-0,28
-0,35
-0,14
-0,18
-0,04
0,01
Uncertainty
(IEC 62585)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
[dB]
Frequency [Hz]
1000
1250
1600
2000
2500
3150
4000
5000
6300
8000
10000
12500
16000
20000
Correction
factors
0,05
0,10
0,50
0,65
1,08
1,17
2,27
3,37
4,58
5,54
7,95
9,90
11,18
-6,96
Uncertainty
(IEC 62585)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.35
0.35
0.35
0.35
0.50
0.50
0.50

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