finalv3_s05 - GEORGIA INSTITUTE OF TECHNOLOGY SCHOOL of...

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GEORGIA INSTITUTE OF TECHNOLOGY FINAL EXAM DATE: 2-May-05 COURSE: ECE-2025 NAME: GT #: LAST, FIRST (ex: gtz127a ) Recitation Section meets (not Lab): L05:Tues-Noon (Chang) L06:Thur-Noon (Ingram) L07:Tues-1:30pm (Chang) L08:Thurs-1:30pm (Zhou) L01:M-3pm (Williams) L09:Tues-3pm (Casinovi) L02:W-3pm (Juang) L10:Thur-3pm (Zhou) L03:M-4:30pm (Casinovi) L11:Tues-4:30pm (Casinovi) L04:W-4:30pm (Juang) GTSav: (Moore) Write your name on the front page ONLY. DO NOT unstaple the test. Closed book, but a calculator is permitted. One page ( 8 1 2 00 × 11 00 ) of HAND-WRITTEN notes permitted. OK to write on both sides. JUSTIFY your reasoning clearly to receive partial credit. Explanations are also required.to receive full credit for any answer. You must write your answer in the space provided on the exam paper itself. Only these answers will be graded. Circle your answers, or write them in the boxes provided. If space is needed for scratch work, use the backs of previous pages. Problem Value Score 1 30 2 30 3 30 4 30 5 30 6 30 7 30
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PROBLEM Spring-05-F.1: In each case, make a sketch of the plot that MATLAB will produce. Label your sketches carefully. Hint: Convert the MATLAB code to an equivalent mathematical function or operation to make the sketch. (a) ww = -pi:pi/200:pi; [HH,ww] = freekz([7,-7], [1,0.9], ww); plot(ww, abs(HH)) (b) tt = 1e-12 + (-100:100); %-avoid divide by zero ht = sin(pi * tt/25)./tt/10; plot(tt, ht) (c) xn = [1,zeros(1,4)]; yn = filter([1,1], [1,-0.9], xn); stem(0:4,yn)
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PROBLEM Spring-05-F.2: In each of the following cases, determine the (inverse or forward) Fourier transform. The following Fourier
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finalv3_s05 - GEORGIA INSTITUTE OF TECHNOLOGY SCHOOL of...

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