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-1 -0.5 0 0.5 1 -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 Real Part Imaginary Part H(z) = K (1+z -1 +z -2 +z -3 +z -4 )/z -4 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -60 -50 -40 -30 -20 -10 0 Normalized Angular Frequency (×π rads/sample) Magnitude (dB) H(z) = 0.2 (1+z -1 +z -2 +z -3 +z -4 )/z -4 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 -100 -50 0 50 100 150 Normalized Angular Frequency (×π rads/sample) Phase (degrees)

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