Hd $\left(e^{j \omega }\right)=0 \quad$ for $=\pi / 4\ltW \leqslant \pi / 4$ $$ \begin{array}{l}{\text { -i }=e^{-j 2 \omega} \text { for } \pi / 4\lt|w|\lt\pi \text { . }} \\ {\text { Design the filter wing Hamming window. }}\alpha=2 \\ {\begin{array}{l}{\frac{N-\alpha}{2}=2} \\ \end{array}}\end{array} $$

N-1=4

N=5

$\begin{array}{rl}{w_{H(D)}} & …