# presec4 - ECE 2200: Section IV Problems (Week 5 / Spring...

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ECE 2200: Section IV Problems (Week 5 / Spring 2009) 1. For each of the following inputs x i and resulting outputs y , sketch the spectrum of the inputs and the outputs. Be certain to label all spectral lines with the appropriate phasor. (a) Inputs: x 1 ( t ) = 2 cos(42 πt + 0 . 44) and x 2 ( t ) = 1 . 2 cos(76 πt - 0 . 3); Output: y ( t ) = x 1 ( t ) + x 2 ( t ) (b) Input: x 1 ( t ) = 3 cos(1426 πt - 0 . 33); Output: y ( t ) = x 1 ( t ) cos(12000 πt + 0 . 1) (c) Input: x 1 ( t ) = 1 . 6 cos(316 πt - 0 . 7); Output: y ( t ) = x 1 ( t - 0 . 06) (d) Input: x 1 ( t ) = 11 . 6 cos(19 . 6 t + 1 . 1); Output: y [ n ] = y ( t ) | t = n (0 . 01) 2. Problem P-5.1 in McClellan, Schafer, and Yoder, Signal Processing First , Pearson Prentice Hall, 2003. 3. Problem P-5.3 in McClellan, Schafer, and Yoder, Signal Processing First , Pearson Prentice Hall, 2003. 4. Problem P-5.9 in McClellan, Schafer, and Yoder, Signal Processing First , Pearson Prentice Hall, 2003. 5. Problem P-5.10 in McClellan, Schafer, and Yoder,

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## This note was uploaded on 09/30/2009 for the course ECE 2200 taught by Professor Johnson during the Spring '05 term at Cornell University (Engineering School).

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presec4 - ECE 2200: Section IV Problems (Week 5 / Spring...

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