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exams09 - University of Waterloo Department of Electrical...

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University of Waterloo Department of Electrical and Computer Engineering ECE 413 – Digital Signal Processing Midterm Exam, Spring 2009 June 11th, 2009, 5:30-6:50 PM Instructor : Dr. Oleg Michailovich Student’s name : Student’s ID # : Instructions: This exam has 3 pages. No books and lecture notes are allowed on the exam . Please, turn o f your cell phones, PDAs, etc., and place your bags, backpacks, books, and notes under the table or at the front of the room. Please, place your WATCARD on the table, and Fll out the exam attendance sheet when provided by the proctor after the exam starts. Question marks are listed by the question. Please, do not separate the pages, and indicate your Student ID at the top of every page. Be neat. Poor presentation will be penalized. No questions will be answered during the exam . If there is an ambiguity, state your assumptions and proceed. No student can leave the exam room in the frst 45 minutes or the last 10 minutes . If you Fnish before the end of the exam and wish to leave, remain seated and raise your hand. A proctor will pick up the exam from you, at which point you may leave. When the proctors announce the end of the exam, put down your pens/pencils, close your exam booklet, and remain seated in silence. The proctors will collect the exams, count them, and then announce you may leave. 1
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Question 1 [35%]: A causal LTI system is described by the following di f erence equation: y [ n ]=2 . 5 y [ n 1] y [ n 2] + 3 ( x [ n ] x [ n 1]) .
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exams09 - University of Waterloo Department of Electrical...

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