SoundAdvisor Model 831C
A-21
Overall Metrics
:
Statistics are sampled every 100ms from the selected OBA frequency weighting
and time weighting into 0.1 dB wide amplitude classes, as shown in
Instrument Noise Levels With OBA, by Preamp
The following charts show the 831C instrument noise levels for the OBA filter With
PRM831 and Direct Input.
FIGURE A-2
Self-Generated Noise Levels for 1/1 Octave Filter With PRM831
Linear
Exponential Units
OBA Overall Equivalent Level Spectrum
L
ω
eq(f)
L
ω
eq(f)
dB
OBA Overall Maximum Level Spectrum
L
ω
max(f)
L
ω
max(f)
dB
OBA Overall Minimum Level Spectrum
L
ω
min(f)
L
ω
min(f)
dB
Table A.18
Units
1
L
ω
n1(f)
dB
2
L
ω
n2(f)
dB
3
L
ω
n3(f)
dB
4
L
ω
n4(f)
dB
5
L
ω
n5(f)
dB
6
L
ω
n6(f)
dB
-10.0
0.0
10.0
20.0
30.0
40.0
High +0dB
High +20dB
0dB
20dB
1
10
100
1000
10000
Summary of Contents for 831C-FFT
Page 1: ...Larson Davis SoundAdvisor Model 831C Sound Level Meter Reference Manual...
Page 214: ...SoundAdvisor Model 831C A 50 FIGURE A 47 Model 831C with 377C20 Microphone...
Page 215: ...SoundAdvisor Model 831C A 51 FIGURE A 48 Model 831C with 377C20 Microphone...
Page 216: ...SoundAdvisor Model 831C A 52 FIGURE A 49 Model 831C with 377C20 Microphone...
Page 223: ...SoundAdvisor Model 831C A 59 A 10 Declaration of Conformity...