x
2
x
3
Table 1.
Second order filter parameters
Filter
Damping
Low Pass freq Correction Factor(Klp)
Bessel
1.732
0.785
Butterworth
1.414
1.000
1 dB Chebyshev
1.054
1.238
2 dB Chebyshev
0.886
1.333
3 dB Chebyshev
0.766
1.390
Table 2.
Roll- off rate comparison
Order
dB/decade
dB/Octave
1
20
6
2
40
12
3
60
18
4
80
24
5
100
30
