Digital Signal Processing Reference
In-Depth Information
Ta b l e 7 . 6
Comparison of results for bandstop FIR filters
Case I
Case II
CLS
PSO
DEPSO
PSO-QI
PSO
DEPSO
PSO-QI
I
1
I
2
Avg Time (s) 64.15355 66.95550 67.30056 65.97979 68.81981 69.174664
<
0.05
Iterations: 200
Avg
1.764650
1.069331
1.230915 1.581259 0.884914 1.095112
Min
0.755631 0.392187 0.492116 0.394064 0.299558 0.377232
Max
4.355703 3.311367 2.881854 2.732023 1.561214 2.018252
Std
0.630130 0.615877 0.447678 0.531293
0.301292
0.392611
Iterations: 500
Avg 0.938503
0.501911
0.689372 0.835579 0.385321 0.593301
Min 0.334030 0.269786 0.316557 0.192995 0.167570 0.273839
Max 3.677116 2.991282 2.748155 1.613370 0.673929 0.986046
Std 0.495277 0.475637 0.340402 0.310986
0.143453
0.176029
Iterations: 2000
Avg
0.075912
0.075032
0.037216 0.022549 0.022663 0.023310
Min
0.021493 0.018992 0.019132 0.013481 0.010508 0.011030
Max
2.083948 1.997408 0.100823 0.044540 0.043413 0.077686
Std
0.290045 0.277730 0.013211
0.006871
0.008525 0.011572
Iterations: 5000
Avg
0.056783 0.055084 0.015453 0.009954 0.010155 0.010056
0.015682
Avg Case I
a
0.056783 0.055084
0.015453
0.018135 0.018273 0.018130
0.023026
Min 0.015190 0.015191 0.015190 0.009181 0.009214 0.009183
Max 2.073480 1.990370 0.016199 0.010547 0.011016 0.010629
Std 0.291025 0.279277
0.000242
0.000404 0.000357 0.000356
Maximum passband ripple (PBR)
Avg
0.482101 0.485566
0.466093
0.514832 0.513667 0.512387
0.489694
Min 0.429418 0.443209 0.438536 0.497235 0.493062 0.495210
Max 1.313270 1.509979 0.496024 0.534771 0.546941 0.541161
Std 0.120814 0.148465 0.013660 0.011329 0.012043
0.010907
Maximum stopband ripple (SBR)
Avg
0.522783 0.522197 0.490307
0.436772
0.440931 0.440415
0.478088
Min
0.469555 0.463607 0.461629 0.411035 0.414722 0.411434
Max
1.925307 1.897104 0.522759 0.456460 0.460227 0.456801
Std
0.202776 0.198756 0.013233 0.012244
0.009701
0.009885
a
Case II evaluated using
I
1
for comparison
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