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Page 139 Microphones
BK4936 microphone (Figures/Tables “F”)
053-469 RevC
SoundPro models SE and DL Data Addendum
Figure F.11 - Pressure Field to Free Field
Frequency
in Hz
QE-4150
Correction
in dB
125
-0.03
250
0.00
1000
-0.22
2000
0.17
4000
0.71
Figure F.12 - Pressure Field to Random Incidence
Self Generated Noise
Table F.13 - Broadband
SPL
LEQ
Fast Response
Range
(dB)
A Weighting
C Weighting
Z Weighting
A Weighting
C Weighting
Z Weighting
-20 to 70
22.9
30.1
37.4
22.8
30.1
37.0
-10 to 80
22.8
29.8
37.1
22.8
30.3
37.2
0 to 90
22.8
30.2
36.6
22.8
30.2
37.3
10 to 100
22.8
30.0
36.6
22.8
30.2
37.6
20 to 110
23.3
30.3
36.5
23.3
30.5
37.5
30 to 120
26.2
31.4
36.8
26.2
31.1
37.1
40 to 130
33.3
34.4
38.2
33.4
34.6
38.9
50 to 140
42.1
42.1
43.1
42.1
42.2
42.8
Slow Response
Range
(dB)
A Weighting
C Weighting
Z Weighting
A Weighting
C Weighting
Z Weighting
-20 to 70
22.8
30.3
37.4
22.8
30.3
37.7
-10 to 80
22.8
30.3
37.4
22.7
30.3
37.7
0 to 90
22.8
30.2
37.5
22.8
30.2
37.5
10 to 100
22.8
30.2
37.9
22.7
30.2
37.6
20 to 110
23.3
30.2
37.5
23.3
30.3
37.3
30 to 120
26.2
31.0
37.6
26.2
31.0
37.9
40 to 130
33.4
34.6
38.6
33.4
34.6
38.5
50 to 140
42.2
42.1
43.0
42.2
42.1
42.9
Frequency
in Hz
QE-4150
Correction
in dB
125
-0.02
250
0.00
1000
-0.04
2000
0.18
4000
-0.07