EL 713: Digital Signal Processing Extra Problem Solutions
(c) Would you classify this as a low-pass, high-pass, band-pass, or band-stop filter? Please briefly explain. Solution: Note that because the zero at z = 1 is of third order, not only is Hf(ω = 0) equal to one, but so is its first and second derivative, so the frequency response is flat at ω = 0. The same is true for ω = π.-1 -0.5 0 0.5 ...
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