dsp_w09_final - WINTER TERM FINAL EXAMINATION April 2009...

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WINTER TERM FINAL EXAMINATION April 2009 DURATION: 3 HOURS No. Of Students: 47 Department Name & Course Number: Systems and Computer Engineering SYSC 4405 Course Instructor (s) : Prof. Mohamed El-Tanany AUTHORIZED MEMORANDA 1) One sheet of notes, 8.5 x 11”, written on both sides. 2) non-programmable calculators Students MUST count the number of pages in this examination question paper before beginning to write, and report any discrepancy to a proctor. This question paper has six pages + cover page = _7__ pages in all. This examination question paper may not be taken from the examination room. In addition to this question paper, students require: an examination booklet yes Scantron Sheet no Name: Student Number: Instructions 1) This question paper must be handed in before leaving the examination room. Please print your name and student number in the spaces provided. 2) If doubt exists as to the interpretation of any question, provide a clear statement of any assumptions made. 3) Any SEVEN (7) questions constitute a complete exam paper. Only the first seven questions as they appear in the answer book will be marked. 4) Each question is of equal value. 5) Some questions require qualitative answers. Clarity and organization of the answers are important.
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SYSC4405 Introduction to Digital Signal Processing FINAL EXAM April 2009 page 2 of 7 Question1 With reference to the DSP system block diagram above please note that it does not include an anti-aliasing filter. a) What function does the post-filter block perform? What should the cut-off frequency of this fil- ter be? b) How does the output of the D/A converter differ by comparison to the output of an ideal dis- crete-to-continuous converter? c) Assume that the analog input is given by Give an approximate expression for the output y(t), taking into consideration the frequency response of the LTI system, d) How would your answer to part c change if the sampling frequency is reduced to 5000 Hz, but everything else remained the same?.
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dsp_w09_final - WINTER TERM FINAL EXAMINATION April 2009...

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