Svantek SV 977D - Page 332

332
SV 977D User Manual - Appendixes
Frequency
Compensation filter
for 90 deg incidence
angle “Outdoor
Environment”
Typical compensated
response of SV 977D
with SA 277D for
90 deg incidence
angle
Compensated Case
Effect of SA 277D for
90 deg incidence
angle
Uncertainty
(IEC 62585:2012)
[Hz]
[dB]
[dB]
[dB]
[dB]
11 548
2.39
-0.76
3.39
0.35
11 885
2.52
-1.02
3.32
0.35
12 232
2.80
-1.13
3.15
0.35
12 589
3.16
-1.43
3.12
0.35
12 957
3.50
-1.73
2.83
0.35
13 335
3.77
-2.19
2.65
0.35
13 725
3.95
-2.46
2.34
0.35
14 125
4.11
-2.79
2.25
0.35
14 538
4.30
-3.21
1.73
0.35
14 962
4.54
-3.72
1.40
0.35
15 399
4.78
-4.29
0.97
0.35
15 849
4.86
-5.38
-0.08
0.35
16 312
4.58
-6.51
-0.85
0.35
16 788
3.77
-8.15
-2.30
0.35
17 278
2.29
-10.35
-4.17
0.35
17 783
0.05
-13.04
-6.71
0.35
18 302
-2.91
-16.20
-9.66
0.35
18 836
-6.49
-20.01
-13.49
0.35
19 387
-10.50
-23.86
-16.79
0.35
19 953
-14.78
-28.15
-21.05
0.35
Table C.7.7. SV 977D with SA 277D combined Free Field correction with the use of the electrostatic
actuator for 90 deg incidence angle (microphone corrections + compensated Case Effect)
[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
-0.03
-0.10
-0.13
-0.11
-0.10
-0.07
Complex
uncertainty
--
--
--
--
--
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
[dB]
Frequency [Hz]
1000
1250
1600
2000
2500
3150
4000
5000
6300
8000
10000
12500
16000
20000
Correction
factors
-0.15
-0.07
0.05
0.12
0.61
0.67
1.44
2.04
2.89
3.80
4.83
5.83
3.68
-16.34
Complex
uncertainty
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.49
0.49
0.49
0.49
0.61
0.61
0.61
Linear operating ranges with the Outdoor Airport filter