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BRUEL & KJAER 2209 - Page 105

BRUEL & KJAER 2209
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120
Sones -
Ph
ons
110
120
100
150
110
100
80
90
70
100
60
50
40
..J
IJJ
Gj
80
_.
30
90
IJJ
0:::
=>
20
(/)
70
(/)
w
15
so
0:::
~
10
70
~
60
~
50
5
t.
60
t.O
3
2
50
30
t.O
0.5
I
4
4
1000
10000
Hz
4
100
FREQUENCY
1651f5
Fig.l.
17.
Contours
of
equal loudness index
103

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