$5\mathrm{.}1-5$ A lowpass signal g$($t$)$ sampled at rate of fs $>2$B needs reconstruction. The sampling interval is

Ts $=1/$fs$.$

$($a$)$ If the reconstruction pulse used is

p$($t$)=$

specify an equalizer filter E$($f $)$ to recover g$($t$).$

$($b$)$ If the reconstruction pulse used is

t

$$

Ts

$1$

$2$

t

$$

Ts

$1$

$2$