Digital Signal Processing Reference
In-Depth Information
LPF99F0.5
0
300
-20
250
-40
200
-60
150
100
-80
-100
50
0
-120
-140
-50
-100
-160
0 .2 .4 .6 .81
Normalised Frequency,
F
0
50
100
Index,
k
Normalized Frequency,
F
0.15
1.2
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
0
0.1
0.2
0.3
0.4
0.5
Index,
k
Normalised Frequency,
F
Normalized Frequency,
F
Filter Coefficients
h
1
-
h
5
h
6
-
h
10
h
11
-
h
15
h
16
-
h
20
h
21
-
h
25
h
26
-
h
30
h
31
-
h
35
h
36
-
h
40
h
41
-
h
45
h
46
-
h
50
0.0023
0
-0.042
0
0.4415
0
-2.8784
0
14.1734
0
0
-0.0141
0
0.1833
0
-1.4305
0
7.5193
0
-52.866
-0.0043
0
0.0701
0
-0.6655
0
3.9998
0
-20.075
0
0
0.0246
0
-0.2873
0
2.0446
0
-10.275
0
162.4825
0.0079
0
-0.1145
0
0.9844
0
-5.5013
0
30.2211
256
Performance Features
Parameter
Symbol
Value
Units
Frequency Response
0.4884x
f
N
-3 dB Cut-off Frequency
F
-3dB
[f
N
]
Maximum Attenuation
A
−
103.3
dB
0.063x
f
N
Transition Width
∆
F
[f
N
]
1.4x10
−5
Pass-Band Ripple
R
dB
Step Response
Rise/Fall Time
τ
R
1.94x
∆
T
[
∆
T]
% Overshoot
Q
6.7
%
S
Settling Time
τ
15x
∆
T
[
∆
T]
