39
Level of acoustic output corrected with filter A.
Coefficient of local pressure loss (-)
L
WA
= L
W1
+ 10 log(S) + K
A
L
WA
[dB(A)]
level of acoustic output corrected with filter A.
L
W1
[dB]
level of acoustic output L
W1
related to the 1 m² section (see Tab. 10.3.1.)
S
[m²]
duct cross section
K
A
[dB]
correction to the weight filter A (see Tab. 10.3.2.)
Level of acoustic output in octave ranges.
L
Woct
= L
W1
+ 10 log(S) + L
rel
L
Woct
[dB]
spectrum of acoustic output in octave range
L
W1
[dB]
level of acoustic output L
W1
related to the 1 m² section (see Tab. 10.3.1.)
S
[m²]
duct cross section
L
rel
[dB]
relative level expressing the shape of the spectrum (see Tab. 10.3.3.)
2,736
2,099
1,781
1,527
1,272
0,929
0,636
0,892
0,747
0,627
0,531
0,455
0,393
0,344
0,307
0,273
0,243
0,111
0,099
