代码:

% Discrete-time Signal x2(n)
Ts = 0.001; n = -5:1:5; nTs = n*Ts; Fs = 1/Ts; x = exp(-1000*abs(nTs)); % Analog Signal
Dt = 0.00005; t = -0.005:Dt:0.005;
xa = x * sinc(Fs*(ones(length(n),1)*t - nTs'*ones(1,length(t)))) ; % check
error = max(abs(xa - exp(-1000*abs(t))))

  

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