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assignment1 - Carleton University Department of Systems and...

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Carleton University Department of Systems and Computer Engineering SYSC-5602 Digital Signal Processing Winter 2009 Assignment # 1 Assigned Jan 21, 2009 Due (in class) Feb 1, 2009 ______________________________________________________________________________ In this assignment submit only your final answers for each question. Keep the derivations of your answers for yourself. Grading will be based only on final answers for the assignments. _____________________________________________________________________________ Problem 1.1 an 8th order discrete time system is described by the following difference equation: where a = {1.0000 0 2.3695 0 2.3140 0 1.0547 0 0.1874} b = {0.0048 0 -0.0193 0 0.0289 0 -0.0193 0 0.0048} (a) using the MATLAB function impz(), give the commands needed to find the impulse response h(n) of the system. Also how would you use the stem() function to make a stem plot of h(n)? (b) Using the MATLAB function filter(), give the commands needed to find the same impulse response as in (a). (c) Using the MATLAB function conv(), give the commands needed to calculate the linear convo- lution of h(n) and u(n). (d) Using the MATLAB function freqz(), give the commands needed to calculate the frequency response of the filter.
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