Svantek SV 973 - Page 152

SVAN 973 User Manual – Appendixes
152
ST 973 and SV 973 frequency characteristics
Table C.3 ST 973 free field corrections with the use of the Bruel & Kjaer 4226 sound calibrator
[dB]
Frequency [Hz]
31.5
63
125
250
500
1000
2000
4000
8000
Typical pressure
response
0.00
0.00
0.00
0.00
0.00
0.00
-1.90
-5.30
-8.50
ST 973
Free Field
corrections
0.00
0.00
0.00
0.00
0.00
0.00
0.00
1.15
4.05
Uncertainty
(IEC 62585:2012)
0.25
0.25
0,25
0.25
0.25
0.25
0.25
0.25
0.35
Table C.4 Typical ST 973 and SV 973 frequency characteristics
Frequency
ST 973 Free Field
response
SV 973 Free Field
compensated
response
Compensated
Case Effect
Uncertainty
(IEC 62585:2012)
[Hz]
[dB]
[dB]
[dB]
[dB]
20
-0.78
-0.80
-0.02
0.25
25
-0.20
-0.21
-0.01
0.25
32
-0.03
-0.04
-0.01
0.25
40
0.01
-0.01
-0.02
0.25
50
-0.01
-0.02
-0.01
0.25
63
-0.03
-0.05
-0.02
0.25
79
-0.06
-0.07
-0.01
0.25
100
-0.05
-0.06
-0.02
0.25
126
-0.04
-0.06
-0.01
0.25
158
-0.05
-0.05
0.00
0.25
200
-0.03
-0.04
-0.01
0.25
251
-0.03
-0.02
0.00
0.25