Digital Signal Processing Lab Experiment

1) To synthesize the sequence x(n)=1,,1,2,2,3,3,2,1 for -2<=n<=5

Solution:
n=[-2:5];
x=[1,1,2,2,3,3,2,1];
plot(n,x,'o')
stem(n,x)

Write this on your MATLAB software and then you will see the graph.


2) To synthasize the expoonential impulse response x(n)=(0.9)^n for index values n=0,1,2, ..........,50

Solution:
n=[0:50];
x=(0.9).^n;
plot(n,x,'o')
grid

Write this on your MATLAB software and then you will see the graph.

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Digital Signal Processing Lab Experiment 2

3) Superimposing two plots for comparison (N.B.- Problem 1 & 2)

Solution:
y=exp(-n/10);
plot(n,y,'+');
hold on
plot(n,x,'o');
hold off

Write this on your MATLAB software and then you will see the graph.


4) To generate a complex valued exponential sequence

Solution:
x=exp((2+3j)*n);
subplot(2,2,1)
plot(n,real(x),'o');
subplot(2,2,2);
plot(n,imag(x),'o');
subplot(2,2,3);
plot(n,abs(x),'o');

Write this on your MATLAB software and then you will see the graph.

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