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Skrypt APSC - MARS

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ROZDZIAŁ 7. FILTRY CYFROWE 1200−20RectwinHammingHanning0−20BartlettBlackmanKaiser (5)−40−40|H(Ω)| [dB]−60−80−100|H(Ω)| [dB]−60−80−100−120−120−140−140−1600 0.1 0.2 0.3 0.4 0.5Ω/2π−1600 0.1 0.2 0.3 0.4 0.5Ω/2π(a) Okna: prostokątne, Hamminga, Hanninga, Bartleta, Blackmana, Kaisera (β = 5).0−10−30β = 0.1β = 1β = 5β = 100−10−30β = 0.1β = 1β = 5β = 10|H(Ω)| [dB]−50−70−90−110|H(Ω)| [dB]−50−70−90−130−110−1500 0.1 0.2 0.3 0.4 0.5Ω/2π0.15 0.16 0.17 0.18 0.19 0.2 0.21 0.22 0.23 0.24 0.25 0.26Ω/2π(b) Okna Kaisera dla β = 0, 1 β = 1 β = 5 β = 10 i powiększenie fragmentu.Rysunek 7.5: Porównanie charakterystyk częstotliwościowych filtrów zaprojektowanychprzy użyciu różnych okien. N = 93, F 0 = 0, 2.

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