Question

given x(n)=1,2,3,4 find y(n) if y(k)=x((k-2))4​

Answer 1

Answer:

z [n] = cos

, n=0,1,2,3

h[n] =2", n=0,1,2,3

(a) Calculate the four-point DFT X[k].

(b) Calculate the four-point DFT H[k].