Digital Signal Processing Reference
In-Depth Information
LPF155F0.25
140
0
120
-20
100
-40
80
-60
60
-80
40
-100
20
-120
0
-140
-20
-160
-40
0
0.2
0.4
0.6
0.8
1
0
50
100
150
Normalised Frequency,
F
Index,
k
Normalized Frequency,
F
1.2
0.15
0.12
1
0.09
0.8
0.06
0.03
0.6
0
0.4
-0.03
-0.06
0.2
-0.09
0
-0.12
-0.2
-0.15
0
50
100
150
0
0.05
0.1
0.15
0.2
0.25
Index,
k
Normalised Frequency,
F
Normalized Frequency,
F
Filter Coefficients
h
1
-
h
8
h
9
-
h
16
h
17
-
h
24
h
25
-
h
32
h
33
-
h
40
h
41
-
h
48
h
49
-
h
56
h
57
-
h
64
h
65
-
h
72
h
73
-
h
78
-0.0015
-0.0065
-0.0247
-0.0824
-0.2419
-0.6318
-1.4914
-3.2825
-7.2801
-22.3863
0
0
0
0
0
0
0
0
0
0
0.0022
0.0092
0.0338
0.1091
0.3107
0.7899
1.8252
3.9825
9.0987
38.0127
0.0037
0.0154
0.0558
0.177
0.4968
1.2463
2.8513
6.207
14.5048
81.1084
0.0032
0.0129
0.0459
0.1433
0.3964
0.9817
2.2252
4.8406
11.6512
115.1063
0
0
0
0
0
0
0
0
0
128
-0.0046
-0.0179
-0.0617
-0.1869
-0.5021
-1.2131
-2.705
-5.9108
-15.5492
-0.0077
-0.0298
-0.1009
-0.301
-0.7972
-1.9034
-4.2146
-9.2641
-26.0465
Performance Features
Parameter
Symbol
Value
Units
Frequency Response
0.2435x
f
N
-3 dB Cut-off Frequency
F
-3dB
[f
N
]
Maximum Attenuation
A
−
96.9
dB
0.039x
f
N
Transition Width
∆
F
[f
N
]
2.4x10
−5
Pass-Band Ripple
R
dB
Step Response
Rise/Fall Time
τ
R
3.63x
∆
T
[
∆
T]
% Overshoot
Q
8.3
%
τ
S
Settling Time
25x
∆
T
[
∆
T]
