Digital Signals Problems
Question # 00450959
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Updated on: 12/28/2016 02:51 AM Due on: 12/30/2016
A. Fourier Transform properties
(a) If x ( t ) is real and even, show that its Fourier transform is real for all ? (i.e., its imaginary part is identically 0).
(b) If x ( t ) is real and odd, show that its Fourier transform is imaginary for all ? (i.e., its real part is identically 0)
B.Discrete-time Fourier Transform (DTFT)
B. Compute the DTFT of the following signals:
(a) a [ n ] = ? [ n ? 2] + ? [ n + 2]
(b) b [ n ] = u [ n ] ? u [ n ? 4]
(c) c [ n ] = ( sin (( ?/ 4) n )/ ?n ) ^2
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Solution: Digital Signals Problems (Tutorial Guide)