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Unformatted text preview: 1. Consider the two impulse response functions, h 1 ( t ) and h 2 ( t ), shown in the plot on the left below. The plot on the right shows the corresponding | H 1 ( j ) | and | H 2 ( j ) | for these two functions. Label the two curves in the right plot as either | H 1 ( j ) | or | H 2 ( j ) | and provide a brief explanation for your answer (calculations are not necessary). 2. A discrete time system has a transfer function given by the following expression, H [ z ] = 0 . 15 1- z- 2 1 + 0 . 7 z- 2 Determine the type of filter this system represents and sketch a plot of the amplitude of its frequency response from 0 . You do not need to label values on the vertical axis just determine the shape of the curve, but you do need to show your work. 3. Suppose that a continuous time sinusoid, sin( t ), of frequency 25 Hz is sampled every 5 ms and the resulting signal is sent into a discrete time filter that has the following frequency response, 0.2 0.4 0.6 0.8 1-1.5-1-0.5-0....
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This note was uploaded on 12/14/2011 for the course BME 343 taught by Professor Emelianov during the Spring '09 term at University of Texas at Austin.
- Spring '09