Larson Davis SoundAdvisor 831C Reference Manual page 186

FIGURE A-3 Self-Generated Noise Levels for 1/1 Octave Filter With Direct Input
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 Filter With PRM831
30.0
20.0
10.0
0.0
-10.0
-20.0
-30.0
1
FIGURE A-5 Self-Generated Noise Levels for 1/3 Octave Filter With Direct Input
30.0
20.0
10.0
0.0
-10.0
-20.0
-30.0
1
Instrument Noise Levels With OBA, by Microphone
SoundAdvisor Model 831C
10 100
10 100
10 100
The following charts (Figure A-6 through Figure A-21) show the typical instrument
noise level for each microphone type in Normal and High range for 1/1 and 1/3
octave bands.
1000 10000
1000 10000
1000 10000
High +0dB
High +20dB
Normal +0dB
Normal +20dB
High +0dB
High +20dB
Normal +0dB
Normal +20dB
High +0dB
High +20dB
Normal +0dB
Normal +20dB
A-22