Digital Signal Processing Reference
In-Depth Information
M
a
gnitude R
es
ponse (dB
)
Normali
z
ed Freque
n
cy: 0.3226
3
18
Magnitude (dB): 0.4849109
0
Normalized Frequency: 0.2878418
Magnitude (dB): -0.5122244
Normalized Frequency: 0.3399658
Magnitude (dB): -0.5078809
-10
-20
-30
-40
Normalized Frequency: 0.3999023
Magnitude (dB): -44.43421
Normalized Frequency: 0.4324951
Magnitude (dB): -44.83425
-50
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
Normalized Frequency (
rad/sample)
Bild 20-23
Betragsgang des FIR-Filters mit der Ordnung
N
= 54 mit der Equiripple-Methode
(
fdatool, Minimum order, fdatool
)
M
a
gnitude R
es
ponse (dB
)
Normali
z
ed Frequ
en
cy: 0.324
4
629
Magnitude (dB): 0.4039917
0
Normalized Frequency: 0.2930908
Magnitude (dB): -0.4236496
Normalized Frequency: 0.3395996
Magnitude (dB): -0.3779662
-10
-20
-30
-40
Normalized Frequency: 0.3999023
Magnitude (dB): -46.00257
Normalized Frequency: 0.4083252
Magnitude (dB): -46.46704
-50
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
Normalized Frequency (
rad/sample)
Bild 20-24
Betragsgang des FIR-Filters mit der Ordnung
N
= 56 mit der Equiripple-Methode
(
fdatool, Wpass = 1, Wstop = 10, fdatool
)
