Larson Davis SoundAdvisor 831C Reference Manual page 163

FIGURE A-3 Self-generated noise levels for 1/1 octave filters with direct input
50.0
40.0
30.0
20.0
10.0
0.0
-10.0
-20.0
-30.0
1
FIGURE A-4 Self-generated noise levels for 1/3 octave filters with PRM831
50.0
40.0
30.0
20.0
10.0
0.0
-10.0
-20.0
-30.0
1
SoundAdvisor Model 831C
Direct 1/1 OBA Noise Floor
10 100
PRM831 1/3 OBA Noise Floor
10 100
1000 10000
1000 10000
High +0dB
High +20dB
Normal +0dB
Normal +20dB
High +0dB
High +20dB
Normal +0dB
Normal +20dB
A-17