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6. juni 2005<br />
<strong>Digitale</strong> <strong>filtre</strong><br />
dB<br />
0<br />
-5<br />
-10<br />
-15<br />
-20<br />
-25<br />
-30<br />
-35<br />
-40<br />
-45<br />
cascade 11 orderChebyscev2 filter<br />
4000 6000 8000<br />
Hz<br />
10000 12000 14000<br />
Figur 25: Amplituderespons for Chebyscev2 kaskadefilter. Kilde: Egen produktion.<br />
dB<br />
-45.95<br />
-45.96<br />
-45.97<br />
-45.98<br />
-45.99<br />
-46<br />
-46.01<br />
-46.02<br />
-46.03<br />
-46.04<br />
dB<br />
-29<br />
-30<br />
-31<br />
-32<br />
-33<br />
-34<br />
cascade 11 orderChebyscev2 filter<br />
2960 2970 2980 2990 3000 3010<br />
Hz<br />
cascade 11 orderChebyscev2 filter<br />
1.32 1.34 1.36 1.38 1.4 1.42 1.44 1.46<br />
x 10 4<br />
-35<br />
Hz<br />
7000 7500 8000 8500<br />
Hz<br />
9000 9500 10000<br />
ITVP4 – Gruppe 5 Side 29 af 53<br />
dB<br />
0.25<br />
0.2<br />
0.15<br />
0.1<br />
0.05<br />
0<br />
-0.05<br />
-0.1<br />
-0.15<br />
-0.2<br />
-0.25<br />
cascade 11 orderChebyscev2 filter<br />
Figur 26: Forstørrelse af grænseværdierne på Figur 25. Kilde: Egen produktion.
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