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###### The pole-zero plot of a cosine oscillator filter is shown below. The oscillation frequency is one...

The pole-zero plot of a cosine oscillator filter is shown below. The oscillation frequency is one quarter of the sampling frequency (Fs/4). Pole-Zero Plot for the Non-Damped Cosine Oscillator zp R-1 0.8 06 0.4 0.2 zct zc2 2nd order -0.2 -0.4 -0.6 -0.8 -1 zp -1 -0.5 0.5 Real Part O True False Imaginary Part

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