Larson Davis 831 - Page 509

B-8 Sections 5, 6, 7 and 9 (except 9.3) Model 831 Manual
e) Frequency Responses and Corrections
Larson Davis 831 with PRM831 and 377B02 Microphone
average frequency responses and corrections
Required by IEC 61672-1
0° Free Field expanded
Wind Screen Corrections with uncertainty
0° Free Field 0° Free Field Effect of on 831 Wind Screen of Corrections
Exact
Frequency
Response Corrections¹ Wind Screen 0° Free Field on 831¹ @ 95%
Hz
dB dB dB dB dB dB
251.19
0.0 0.0 0.0 0.0 0.0 0.1
316.23
-0.1 0.1 0.1 0.0 0.0 0.1
398.11
0.2 -0.2 -0.1 0.1 -0.1 0.1
501.19
0.2 -0.2 -0.1 0.1 -0.1 0.1
630.96
0.2 -0.2 -0.1 0.1 -0.1 0.1
794.33
0.2 -0.2 -0.1 0.1 -0.1 0.1
1000.00
0.0 0.0 0.0 0.0 0.0 0.1
1059.25
0.0 0.0 0.1 0.1 -0.1 0.1
1122.02
-0.2 0.1 0.1 -0.1 0.1 0.1
1188.50
-0.2 0.2 0.1 -0.1 0.1 0.1
1258.93
-0.4 0.4 0.3 -0.1 0.1 0.1
1333.52
-0.3 0.3 0.2 -0.1 0.1 0.1
1412.54
-0.2 0.2 0.1 -0.1 0.1 0.1
1496.24
-0.1 0.1 0.0 -0.1 0.1 0.1
1584.89
0.0 0.0 0.2 0.2 -0.2 0.1
1678.80
0.0 0.0 0.3 0.3 -0.3 0.1
1778.28
0.0 0.0 0.3 0.3 -0.3 0.1
1883.65
-0.1 0.1 0.4 0.3 -0.3 0.1
1995.26
0.2 -0.2 0.4 0.6 -0.6 0.1
2113.49
0.4 -0.4 0.4 0.8 -0.8 0.1
2238.72
0.3 -0.3 0.5 0.8 -0.8 0.1
2371.37
0.0 0.0 0.6 0.6 -0.6 0.1
2511.89
0.0 0.0 0.6 0.6 -0.6 0.1
2660.73
0.2 -0.2 0.4 0.6 -0.6 0.1
2818.38
0.0 0.0 0.6 0.6 -0.6 0.1
2985.38
-0.2 0.2 0.3 0.1 -0.1 0.1
3162.28
0.0 0.0 0.3 0.3 -0.3 0.1
3349.65
0.0 0.0 0.1 0.1 -0.1 0.1
3548.13
-0.1 0.1 0.0 -0.1 0.1 0.1
3758.37
0.1 -0.1 0.0 0.1 -0.1 0.1
3981.07
0.1 -0.1 0.0 0.1 -0.1 0.1
4216.97
0.0 0.0 -0.2 -0.2 0.2 0.1
4466.84
0.4 -0.4 -0.3 0.1 -0.1 0.1
4731.51
0.1 -0.1 -0.4 -0.3 0.3 0.1
5011.87
-0.1 0.1 -0.4 -0.5 0.5 0.1
5308.84
0.0 0.0 0.0 0.0 0.0 0.1
5623.41
0.0 0.0 -0.1 -0.1 0.1 0.1
5956.62
0.1 -0.1 -0.2 -0.1 0.1 0.1
6309.57
0.2 -0.2 0.2 0.4 -0.4 0.1
6683.44
0.1 -0.1 0.2 0.3 -0.3 0.1
7079.46
0.1 -0.1 0.1 0.2 -0.2 0.1
7498.94
0.0 0.0 -0.1 -0.1 0.1 0.1
7943.28
0.0 0.0 -0.3 -0.3 0.3 0.1
8413.95
0.3 -0.3 -0.4 -0.1 0.1 0.1
8912.51
0.1 -0.1 0.1 0.2 -0.2 0.1
9440.61
0.0 0.0 0.0 0.0 0.0 0.1
10000.00
0.0 0.0 0.2 0.2 -0.2 0.1
10592.54
0.1 -0.1 0.1 0.2 -0.2 0.1
11220.18
0.1 -0.1 -0.1 0.0 0.0 0.1
11885.02
0.0 0.0 -0.2 -0.2 0.2 0.1
12589.25
0.3 -0.3 -0.3 0.0 0.0 0.1
13335.21
0.3 -0.3 -0.3 0.0 0.0 0.1
14125.38
0.1 -0.1 -0.2 -0.1 0.1 0.1
14962.36
0.1 -0.1 -0.1 0.0 0.0 0.1
15848.93
-0.2 0.2 0.4 0.2 -0.2 0.2
16788.04
-0.2 0.2 0.1 -0.1 0.1 0.2
17782.79
-0.1 0.1 -0.1 -0.2 0.2 0.1
18836.49
-0.2 0.2 -0.4 -0.6 0.6 0.1
19952.62
-0.1 0.1 -1.4 -1.5 1.5 0.1