5 - EEL3135 Fall 2011 Quiz 5 BJ Trivedi Christopher Wilson...

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EEL3135 Fall 2011 Quiz 5 BJ Trivedi , Christopher Wilson and Mayank Devam Name:__________________________ _____ ______________________ UFID:________________ Quiz A Score: _____/10 Consider the following signal . In order to compute the 3-pt DFT of the signal we apply the definition for k=0,1,2 where N=3. Calculate the DFT Coefficients as specified below. 1. (2pt) Calculate the Coefficient X[0] 2. (2pt) Calculate the Coefficient X[1] 3. (2pt) Calculate the Coefficient X[2] 4. (2pt) Short Answer: The limits for summation in calculating the coefficients of the DFT are evaluated over N frequencies. Sometimes we will have a sequence x[n] with length L, where L < N. In such cases, what must be done to x[n] to carry out the computation? Pad the signal with N-L zeroes. 5. (2pt) Short Answer: What is the algorithm that can evaluate the DFT reducing the number of computations needed for N points from 2N 2 to ? FFT. Last First
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EEL3135 Fall 2011 Quiz 5 BJ Trivedi , Christopher Wilson and Mayank Devam Name:__________________________ _____ ______________________ UFID:________________ Quiz B Score: _____/10 Consider the following signal . In order to compute the 3-pt DFT of the signal we apply the definition for k=0,1,2 where N=3. Calculate the DFT Coefficients as specified
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