Compute and plot the phase response of H(z) = [(1 + z −1 )/2] 6 . (a) Determine analytically…

Compute and plot the phase response of H(z) = [(1 + z−1)/2] 6.

(a) Determine analytically ∠H (ejω) and use the formula obtained to compute and plot the phase response.

(b) Compute and plot the phase response using the function freqz.