Larson Davis SoundAdvisor 831C Reference Manual page 160

8.0 ≥ 108
32 to 140
16.0 ≥ 110
30 to 140
31.5 ≥ 112
29 to 140
63.0 ≥ 113
27 to 140
125 ≥ 113
27 to 140
250 ≥ 113
27 to 140
500 ≥ 111
29 to 140
1000 ≥ 109
31 to 140
2000 ≥ 106
34 to 140
4000 ≥ 103
37 to 140
8000 ≥ 100
40 to 140
16000 ≥ 97
43 to 140
Table A.9 Octave Band Analysis 1/3 Octave Linearity Range
Nominal
Frequency High OBA Range
(Hz)
0 dB
Gain (dB)
SoundAdvisor Model 831C
≥ 89 ≥ 80
31 to 120 30 to 110 30 to 90
≥ 92 ≥ 83
28 to 120 27 to 110 27 to 90
≥ 95 ≥ 86
26 to 120 25 to 110 24 to 90
≥ 97 ≥ 88
23 to 120 22 to 110 21 to 90
≥ 100 ≥ 91
20 to 120 19 to 110 18 to 90
≥ 103 ≥ 94
17 to 120 16 to 110 15 to 90
≥ 105 ≥ 96
15 to 120 14 to 110 13 to 90
≥ 105 ≥ 97
15 to 120 14 to 110 12 to 90
≥ 104 ≥ 96
16 to 120 15 to 110 11 to 90
≥ 102 ≥ 93
18 to 120 17 to 110 12 to 90
≥ 99 ≥ 91
21 to 120 20 to 110 14 to 90
≥ 96 ≥ 88
24 to 120 23 to 110 17 to 90
Normal OBA Range
+20 dB 0 dB
Gain (dB) Gain (µdB) Gain (dB)
≥ 61 8.0
≥ 64 16.0
≥ 66 31.5
≥ 69 63.0
≥ 73 125
≥ 76 250
≥ 78 500
≥ 79 1000
≥ 79 2000
≥ 78 4000
≥ 76 8000
≥ 74 16000
Nominal
Frequency
(Hz)
+20 dB
≥ 102 ≥ 98
110 to 39 23 to 120 9 to 110
≥ 108 ≥ 106
110 to 32 14 to 120 2 to 110
≥ 120 ≥ 118
110 to 20 3 to 120 -1 to 110
≥ 119 ≥ 117
110 to 22 3 to 120 0 to 110
≥ 117 ≥ 115
110 to 24 5 to 120 2 to 110
≥ 115 ≥ 113
110 to 26 7 to 120 4 to 110
≥ 112 ≥ 111
110 to 28 9 to 120 6 to 110
≥ 109 ≥ 109
110 to 31 12 to 120 9 to 110
≥ 106 ≥ 106
110 to 34 15 to 120 12 to 110
≥ 103 ≥ 103
110 to 37 18 to 120 15 to 110
≥ 100 ≥ 100
110 to 40 21 to 120 19 to 110
≥ 97 ≥ 96
110 to 43 24 to 120 22 to 110
High OBA Range Normal OBA Range
0 dB
0 dB +20 dB
Gain
Gain (dB) Gain (µdB)
(µdB)
≥ 101 ≥ 89
1 to 90
≥ 108 ≥ 92
-2 to 90
≥ 111 ≥ 96
-6 to 90
≥ 110 ≥ 95
-5 to 90
≥ 108 ≥ 94
-4 to 90
≥ 106 ≥ 93
-3 to 90
≥ 104 ≥ 91
-1 to 90
≥ 101 ≥ 88
2 to 90
≥ 98 ≥ 86
5 to 90
≥ 95 ≥ 83
8 to 90
≥ 92 ≥ 80
11 to 90
≥ 88 ≥ 77
14 to 90
+20 dB
Gain
(µdB)
A-14