Table B.1 831C with PRM831 and 377B02 Microphone average frequency responses and
corrections Required by IEC 61672-1
1258.93
1333.52
1412.54
1496.24
1584.89
1678.80
1778.28
1883.65
1995.26
2113.49
2238.72
2371.37
2511.89
2660.73
2818.38
2985.38
3162.28
3349.65
3548.13
3758.37
3981.07
4216.97
4466.84
4731.51
5011.87
5308.84
5623.41
5956.62
6309.57
6683.44
7079.46
7498.94
7943.28
8413.95
8912.51
SoundAdvisor Model 831C
-0.39
0.39
-0.29
0.29
-0.27
0.27
-0.13
0.13
-0.02
0.02
0.01
-0.01
-0.01
0.01
-0.08
0.08
0.20
-0.20
0.36
-0.36
0.24
-0.24
0.01
-0.01
-0.03
0.03
0.19
-0.19
0.00
-0.00
-0.27
0.27
-0.04
0.04
0.01
-0.01
-0.13
0.13
0.10
-0.10
0.10
-0.10
-0.03
0.03
0.35
-0.35
0.06
-0.06
-0.08
0.08
-0.04
0.04
-0.02
0.02
0.04
-0.04
0.21
-0.21
0.02
-0.02
0.04
-0.04
0.01
-0.01
-0.03
0.03
0.27
-0.27
0.06
-0.06
0.31
-0.08
0.21
-0.08
0.20
-0.07
0.07
-0.06
0.23
0.21
0.24
0.25
0.26
0.25
0.40
0.32
0.43
0.63
0.40
0.76
0.53
0.77
0.59
0.60
0.60
0.57
0.42
0.61
0.55
0.55
0.35
0.08
0.30
0.26
0.11
0.12
-0.01
-0.14
-0.00
0.10
0.00
0.10
-0.20
-0.23
-0.22
0.13
-0.39
-0.33
-0.39
-0.47
0.04
0.00
-0.09
-0.11
-0.16
-0.12
0.14
0.35
0.25
0.27
0.12
0.16
-0.14
-0.13
-0.29
-0.32
-0.39
-0.12
0.13
0.19
0.08
0.25
0.08
0.25
0.07
0.25
0.06
0.25
-0.21
0.25
-0.25
0.25
-0.25
0.25
-0.32
0.25
-0.63
0.25
-0.76
0.35
-0.77
0.35
-0.60
0.35
-0.57
0.35
-0.61
0.35
-0.55
0.35
-0.08
0.35
-0.26
0.35
-0.12
0.35
0.14
0.35
-0.10
0.35
-0.10
0.35
0.23
0.45
-0.13
0.45
0.33
0.45
0.47
0.45
0.00
0.45
0.11
0.45
0.12
0.45
-0.35
0.45
-0.27
0.45
-0.16
0.45
0.13
0.45
0.32
0.45
0.12
0.55
-0.19
0.55
B-2
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