Signalbehandling Formelsamling
Signalbehandling Formelsamling
Signalbehandling Formelsamling
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Tabell 4.4. Koefficienterna a ν i Chebyshevfilter.0.5dB ripple (ε =0.349, ε 2 =0.122).N a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 01 2.8632 1.426 1.5163 1.253 1.535 0.7164 1.197 1.717 1.025 0.3795 1.172 1.937 1.309 0.752 0.1796 1.159 2.172 1.589 1.172 0.432 0.0957 1.151 2.413 1.869 1.648 0.756 0.282 0.0458 1.146 2.657 2.149 2.184 1.148 0.573 0.152 0.0241-dB ripple (ε =0.509, ε 2 =0.259).N a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 01 1.9652 1.098 1.1023 0.989 1.238 0.4914 0.953 1.454 0.743 0.2765 0.937 1.689 0.974 0.580 0.1236 0.928 1.931 1.202 0.939 0.307 0.0697 0.923 2.176 1.429 1.357 0.549 0.214 0.0318 0.920 2.423 1.655 1.837 0.447 0.448 0.107 0.0172-dB ripple (ε =0.765, ε 2 =0.585).N a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 01 1.3072 0.804 0.8233 0.738 1.022 0.3274 0.716 1.256 0.517 0.2065 0.705 1.499 0.693 0.459 0.0826 0.701 1.745 0.867 0.771 0.210 0.0517 0.698 1.994 1.039 1.144 0.383 0.166 0.0208 0.696 2.242 1.212 1.579 0.598 0.359 0.073 0.0133-dB ∗) ripple (ε =0.998, ε 2 =0.995).N a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 01 1.0022 0.645 0.7083 0.597 0.928 0.2514 0.581 1.169 0.405 0.1775 0.575 1.415 0.549 0.408 0.0636 0.571 1.663 0.691 0.699 0.163 0.0447 0.568 1.911 0.831 1.052 0.300 0.146 0.0168 0.567 2.161 0.972 1.467 0.472 0.321 0.056 0.011*) Tabellen är uträknad för ”exakt”3dB, ej för 20 · log √ 2 ≈ 3.01dB.Därav ε ≠1ocha 0 ≠1för N =1.25