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Unformatted text preview: ) with N L samples/2 will enable exact recovery of X( ). 2 Example 2: 5-tap moving average: = otherwise n n x 4 1 ] [ DTFT: ) 5 . sin( ) 5 . 2 sin( ) ( 2 j e X = 5-point DFT: = = otherwise k k X 5 ) ( 10-point DFT: = = = 9 ,..., 2 , 1 1 1 5 ) ( 5 / k e e k k X jk jk Conclusion: = = otherwise N k X k X N k 1 | ) ( ) ( / 2 Increasing N (pad x[n] with more zeros) does not change the frequency spectrum but results in a denser sampling of the frequency spectrum....
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This note was uploaded on 12/20/2010 for the course E E 338 taught by Professor Vicky during the Spring '10 term at University of Alberta.
- Spring '10