GENERATION ON VARIOUS SIGNALS AND SEQUENCES

GENERATION ON VARIOUS SIGNALS AND SEQUENCES (PERIODIC AND APERIODIC), SUCH AS UNIT IMPULSE, UNIT STEP, SQUARE, SAWTOOTH, TRIANGULAR, SINUSOIDAL, RAMP, SINC .

// UNIT IMPULSE

close ;

clear all;

clc;

t=-5:1:5;

a=[zeros(1,5) 1 zeros(1,5)];

k=input('enter the amplitude');

b=k*a;

subplot(2,1,1);

plot2d(t,b);

xtitle('impulse response', 'amplitude’, 'time');

subplot(2,1,2);

plot2d3(t,b);

xtitle('impulse response', 'amplitude’, 'time');

OUTPUT:-

OUTPUT WAVEFORM:-

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// STEP SEQUENCE

close ;

clear all;

clc;

t=-5:1:5;

a=4*[zeros(1,5) ones(1,6)];

plot2d3(t,a);

xtitle('step response', 'amplitude’, 'time');

OUTPUT WAVEFORM:

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// RAMP WAVEFORM

close ;

clear all;

clc;

t=0:1:50;

for n=0:50;

    x(n+1)=n;

end

plot2d(t,x);

xtitle('step response', 'amplitude’, 'time');

OUTPUT  WAVEFORM:

 

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//SAWTOOTH WAVEFORM

close ;

clear all;

clc;

p=100;

t=1:1:p*10;

for n=1:(p/2)

 a(n)=n;

end

for n=(p/2)+1:p

    a(n)=n-p;

end

a1=a

for i=1:9

    a1=[a1 a];

end

plot2d(t,a1);

axis( [ 0 1000 -100 100]);

xtitle('sawtooth sequence', 'amplitude’, 'time');

OUTPUT  WAVEFORM:

 

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//SQUARE WAVEFORM

close ;

clear all;

clc;

t=(0:0.1:5*%pi)';

plot2d1(1.5*%pi*squarewave(t))

xtitle('square wave','time','amplitude');

OUTPUT   WAVEFORM:-

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// TRIANGULAR WAVEFORM

close ;

clear all;

clc;

for n=0:6

for a=1:5

x(n*8+a)=a

end

for i=1:4;

a=a+1;

x(n*8+a)=5-i

end

end

xtitle(' triangular wave form ','time','amplitude');

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//SINE AND COSINE WAVES

close ;
clear all;
clc;
n=0:0.1:2*%pi;
x=sin(n);
subplot(211);
plot2d(n,x);
xtitle('sine wave', 'time','amplitude');
y=cos(n);
subplot(212);
plot2d(n,y);
xtitle('cos wave', 'time','amplitude');

 
OUTPUT   WAVEFORM:

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//SINC FUNCTION

close ;

clear all;

clc;

t=-20:0.01:20;

x=sinc(t);

subplot(211);

plot2d(t,x);

xtitle('sinc waveform','time','amplitude');

OUTPUT  WAVEFORM :