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EE4150_2004_midterm

# EE4150_2004_midterm - EE4150 Digital Signal Processing Dr...

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1 EE4150 Digital Signal Processing Dr. Hsiao-Chun Wu Midterm Examination, Spring of 2004 Time: 11:40 a.m. ~12:30 p.m., Monday, March 8, 2004 Please ALWAYS work on the FRONT SIDE of each page. No answer on the BACK SIDE of any page will be GRADED! Ask for additional blank papers if necessary! You may check any textbook, classnote or other references alone during the test. However, NO CHEATING or COLLABORATION is allowed and such violation of the university regulations will be reported. Please write down your name and social security number here: Full Name: __________ SOLUTION ______________ Social Security Number: ___________________________________________ Partition Score Question 1 Question 2 Question 3 Total

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2 Question 1 (30%) Determine whether or not each of the following signals is periodic. In case a signal is periodic, specify its fundamental period. (a) Discrete-time signal: ( ) n n x 7 sin ) ( = , (10%) (b) Discrete-time signal: + = 5 cos 3 2 sin ) ( n n n x π π , (10%) (c) Discrete-time signal: 10 n π cos , (10%)
3 Answer to Question 1: (a) 7 2 2 7 m N m N

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EE4150_2004_midterm - EE4150 Digital Signal Processing Dr...

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