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Data Addendum
Sound Examiner SE-400 Series
59
Pressure to free field corrections with BK4936 microphone and RIC and windscreen (sections: 5.2.8, 9.2.7d)
Note: add to pressure response to get 0⁰incidence free-field response. B&K 4226 calibrator may be used to determine the
pressure field response.
Frequency
in Hz
BK4936 microphone
Pressure Field to
Free Field
Corrections
in dB
32
0.1
40
0.0
50
-0.1
63
-0.1
80
-0.1
100
-0.1
125
-0.1
160
-0.1
200
-0.3
250
-0.2
315
-0.1
400
-0.1
500
-0.1
630
0.0
800
0.0
1000
0.0
1250
0.4
1600
0.2
2000
0.7
2500
1.3
3150
1.9
4000
2.5
5000
3.7
6300
5.3
8000
6.9
10000
9.4
12500
9.2