Assignment4 - EE 2200 / Spring 2009: Assignment Four 1 ECE...

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Unformatted text preview: EE 2200 / Spring 2009: Assignment Four 1 ECE 2200 / Spring 2009 FREQUENCY SELECTIVE FILTERS ASSIGNMENT FOUR 1 1. Consider the filter with impulse response h [ k ] = [ k ] + [ k- 1] (a) Plot its pole-zero diagram (b) Plot its frequency response using freqz (c) Is this a high-pass, low-pass, or bandpass filter? Explain your answer. 2. Consider the filter with impulse response h [ k ] = [ k ]- [ k- 1] (a) Plot its pole-zero diagram (b) Plot its frequency response using freqz (c) Is this a high-pass, low-pass, or bandpass filter? Explain your answer. 3. Consider the bandpass filter design procedure described in section 7-7.3 of McClel- lan, Schafer, and Yoder, Signal Processing First (Pearson Prentice Hall, 2003). The passband is chosen by removing a complex conjugate zero pair from a collection of uniformly spaced zeros on the unit circle. (a) Use this approach to design an FIR bandpass filter with impulse response N- 1 i =0 a i z- i with N coefficients to pass the frequency 2 (3 / 11). (b) Discuss what values of N can be used. (c) For the smallest possible N , plot the frequency repsonse of the filter using Matlab. Is this filter a linear phase filter?...
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Assignment4 - EE 2200 / Spring 2009: Assignment Four 1 ECE...

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