Computer Problems 2.23 A rectangular pulse x(i) of unit amplitude and duration T is applied to an ideal low-pass filter of bandwidth B. (a) What is the impulse response of the ideal low-pass filter? (b) Determine and plot the response y(t) of the filter for BT = 5, 10, 20. Using the following Matlab script, %--- Simulation parameters ---- BT = 5; %BT product T = 1; = BTT: Delta_t= T/100; t = (-6*T: Delta_t: 6*T); % ---Pulse of unit amplitude and duration T.. X = zeros(size(t)); index find (abs(t)