45
Sound Data
0
10
20
30
40
50
60
70
125 250 500 1000 2000 4000 8000
Sound pressure level (dB, ref 20µPa)
Octave-band frequency (Hz)
FWKE08E(H)
M
L
H
Q
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
0
10
20
30
40
50
60
70
125 250 500 1000 2000 4000 8000
Sound pressure level (dB, ref 20µPa)
Octave-band frequency (Hz)
FWKE11E(H)
M
L
H
Q
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
M
L
H
Q
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20