R
i
4700
5100
5600
6200
6800
7500
8200
9100
10000
11000
12000
13000
15000
16000
18000
20000
22000
24000
27000
30000
r
Gain
R
f
4700
5100
5600
6200
6800
7500
8200
9100
10000
11000
12000
13000
15000
16000
18000
20000
22000
24000
27000
30000
r
Gain
db
C
i
uf
-3db HPF
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