3M SoundPro SE Series - Table B.11 - Pressure Field to Free Field Corrections

Page 61 Microphones
QE7052 microphone (Figures/Tables “B”)
053-469 RevC
SoundPro models SE and DL Data Addendum
Table B.11 - Pressure Field to Free Field Corrections
Frequency
in Hz
BK4936
Correction
in dB
125
0.04
250
0.00
1000
-0.21
2000
0.14
4000
1.29
Table B.12 - Pressure Field to Random Incidence Corrections
Frequency
in Hz
BK4936
Correction
in dB
125
0.05
250
0.00
1000
-0.09
2000
-0.06
4000
0.60
Self Generated Noise
Table B.13- Broadband
SPL
LEQ
Fast Response
Range (dB)
A Weighting
C Weighting
Z Weighting
A
Weighting
C
Weighting
Z
Weighting
-20 to 70
22.4
30.8
37.8
22.4
30.8
37.9
-10 to 80
22.4
30.6
37.8
22.3
30.7
38.4
0 to 90
22.3
30.2
37.3
22.3
30.5
38.3
10 to 100
22.4
30.5
37.9
22.4
30.6
37.9
20 to 110
23.0
30.5
38.3
23.0
30.7
37.9
30 to 120
26.7
31.3
39.0
26.6
31.4
38.3
40 to 130
34.2
35.3
39.8
34.2
35.3
39.4
50 to 140
43.0
43.0
43.6
43.1
43.0
43.6
Slow Response
Range(dB)
A Weighting
C Weighting
Z Weighting
A
Weighting
C
Weighting
Z
Weighting
-20 to 70
22.4
30.7
34.7
22.4
30.7
38.6
-10 to 80
22.3
30.5
34.7
22.3
30.5
38.5
0 to 90
22.3
30.7
34.7
22.3
30.6
38.3
10 to 100
22.4
30.7
34.7
22.4
30.6
38.5
20 to 110
23.0
30.6
35.0
23.0
30.7
38.4
30 to 120
26.7
31.5
35.0
26.7
31.5
38.5
40 to 130
34.2
35.3
36.9
34.2
35.3
39.6
50 to 140
43.1
43.0
43.1
43.1
43.0
43.5