8-Pole, 6-Zero
Constant Delay
Appendix A
Theoretical Transfer Characteristics
1
f/fc
Amp
Phase
Delay
(Hz)
(dB)
(deg)
(sec)
0.00
0.00
0.00
.776
0.005
-28.0
0.10
.776
0.012
-55.9
0.20
.776
0.005
-83.9
0.30
.776
-0.042
-112
0.40
.776
-0.161
-140
.776
0.50
-0.384
-168
.776
0.60
-0.745
-196
.776
0.70
-1.28
-224
.776
0.80
-1.62
-238
.776
0.85
-252
-2.02
.776
0.90
-265
-2.48
.775
0.95
-279
-3.01
.773
1.00
-307
-4.29
.766
1.10
-334
-5.91
.749
1.20
-10.3
-386
.675
1.40
-15.9
-431
.558
1.60
-22.4
-467
.443
1.80
-29.4
-495
.351
2.00
-39.0
-523
.268
2.25
2.50
-50.5
-544
.212
2.75
-78.0
-561
.171
3.00
-63.7
-395
.142
3.25
-63.5
-407
.119
3.50
-66.9
-417
.102
3.75
-425
.088
-74.7
4.00
-253
.077
-85.0
4.25
-259
.068
-72.0
4.50
-265
.060
-67.9
4.75
-270
.054
-65.8
5.00
-64.6
-275
.048
5.25
-63.9
-279
.044
5.50
-63.5
-283
.040
5.75
-63.3
-286
.036
6.00
-63.2
-289
.033
6.50
-63.3
-295
.028
7.00
-63.7
-299
.024
8.00
-64.7
-307
.019
9.00
-66.0
-313
.015
10.0
-67.3
-318
.012
1.Normalized
Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
Low-Pass (60 dB)
Frequency Response
0
Amp (dB)
-20
-40
-60
-80
-100
0.1
2
1.0
2 3 4 5 6 7
10.0
Normalized Frequency(f/fc)
3 4 5 6 78
Delay
(Normalized)
1.0
Delay (sec)
0.5
0.0
0.1
0.15 2
1.0
1.5
Normalized Time (1/f sec)
3
4
5 6 7 89
Step Response
1.2
1.0
0.8
0.6
0.4
0.2
-0.0
-0.2
0
Step Response (V/V)
1
2
3
4
Normalized Time (1/f sec)
5
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9
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