Sound Data
NC Curve
70
60
50
40
30
20
10
0
125
70
60
50
40
30
20
10
0
125
13
250
500
Octave-band frequency (Hz)
FT(Y)N25JXV1
250
500
Octave-band frequency (Hz)
FTYN20JXV1
H
M
L
Q
1000
2000
H
M
L
Q
1000
2000
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
4000
8000
NC-55
NC-50
NC-45
NC-40
NC-35
NC-30
NC-25
NC-20
4000
8000