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Assignment(1)Sol

# Assignment(1)Sol - x5=(2-t5*ones(1,length(t5...

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Signals and Systems (EENG 320) Assignment (1) fig(1) fig(2) 1) A continuous-time signal x(t) is shown in fig(1). Sketch and label carefully each of the following signals: The original signal x(t) a. x(t-1)

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b. x(2-t) c. x(2t+1)

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d. x(4-t/2)
e. [x(t) + x(-t)] u(t) f. x(t) [ δ(t+2/3) – δ(t-3/2)]

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2) A discrete-time signal is shown in fig(2). Sketch and label carefully each of the following signals: a. x[n-4] b. x[3-n]
c. x[3n] d. x[n-2] δ[n-2]

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3) Write MATLAB code to draw signals of problems 1.a, 1.b, 1.c. Hence, and without constructing the signals once again write a MATLAB code to draw the signals of problems 2.a, 2.b, 2.d. The code for the first part will be as the following t1=[-3:0.01:-2]; t2=[-2:0.01:-1]; t3=[-1:0.01:0]; t4=[0:0.01:1]; t5=[1:0.01:2]; t6=[2:0.01:3]; x1=zeros(1,length(t1)); x2=(t2+1).*ones(1,length(t2)); x3=ones(1,length(t3)); x4=ones(1,length(t4))*2;

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Unformatted text preview: x5=(2-t5).*ones(1,length(t5)); x6=zeros(1,length(t6)); x=[x1 x2 x3 x4 x5 x6]; t=[t1 t2 t3 t4 t5 t6]; %1.a ta=t+1; xa=x; %1.b tb=2-t; xb=x; %1.c tc=t/2-1/2; xc=x; %following code to plot the function in the same figure figure(1) subplot(3,1,1); % to place more than one plot in the figure. plot(ta,xa); grid; % to add grid subplot(3,1,2); % to place more than one plot in the figure. plot(tb,xb); grid; % to add grid subplot(3,1,3); % to place more than one plot in the figure. plot(tc,xc); grid; % to add grid The code for the second part will be as the following n=-5:5; x=[0 -1 -.5 .5 1 1 1 1 .5 0 0]; %2a nsa=n+4; xsa=x; %2b nsb=-n+3; xsb=x; %2d nsd= n+2; delta=(n==0); xsd=x.*delta; figure(1); subplot(3,1,1); stem(nsa,xsa, 'LineWidth' ,2); grid; subplot(3,1,2); stem(nsb,xsb, 'LineWidth' ,2); grid; subplot(3,1,3); stem(nsd,xsd, 'LineWidth' ,2); grid;...
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Assignment(1)Sol - x5=(2-t5*ones(1,length(t5...

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