0
4.8kviews
Find the value of x(n)=cos(0.25πn) for n=0, 1, 2, 3. Compute the DFT of x(n) using FFT flow graph.
1 Answer
0
347views
n π cosπ
0 0 1
1 π4 12
2 π2 0
+3 3π4 12

enter image description here

Result: X(k)={1, 1-√2 j, 1, 1+√2 j}

Please log in to add an answer.