1. REPRESENTATION OF BASIC SIGNAL

1. REPRESENTATION OF BASIC SIGNAL 

%program for the generation of unit impulse signal

t = -2:1:2;

y = [zeros(1,2), ones(1,1), zeros(1,2)];

subplot (2,2,1);

stem(t,y);

xlabel ('n --->');

ylabel('amplitude');

%program for the generation of unit step sequence [u(n)-u(n-N)]  

n=input('enter the N value');

t=0:n-1;

y1=ones(1,n);

subplot(2,2,2);

stem(t,y1);

ylabel('amplitude');

xlabel('n-->');

%program for the generation of a ramp sequence  

n1=input('enter the length of ramp sequence ');

t=0:n1;

subplot(2,2,3);

stem(t,t);

ylabel('amplitude');

xlabel('n-->');

%program for the generation of the exponential

 sequence

n2 =input ('enter the length of exponential sequence');

t= 0:n2;

a=input('enter the a value');

y2 = exp(a*t);

subplot(2,2,4);

stem (t,y2);

ylabel('amplitude');

xlabel('(a)n -->');

%program for the generation of sine sequence

t=0:.01:pi;

y=sin(2*pi*t);figure(2);

subplot(2,1,1);plot(t,y);ylabel('Amplitude');

xlabel('(a)n-->');

%program for the generation of cosine sequence 

t=0:.01:pi;

y=cos(2*pi*t);

subplot(2,1,2);plot(t,y);ylabel('Amplitude');

xlabel('(b)n-->');

RESULT

  enter the N value                                             10

  enter the length of ramp sequence               10

  enter the length exponential sequence         10

  enter the a value                                              10