Sampling a Signal using Matlab

SAMPLING:

The matlab code for sampling of sinusoidal signal shown in below..

clc;

clear all;

close all;

fs=500e3; %Very high sampling rate 500 kHz

f=10e3; %Frequency of sinusoid

nCyl=5; %generate five cycles of sinusoid

t=0:1/fs:nCyl*1/f; %time index

x=cos(2*pi*f*t);

figure,

 plot(t,x)

title('Continuous sinusoidal signal');

xlabel('Time(s)');

ylabel('Amplitude');

fs1=30e3; %3kHz sampling rate

t1=0:1/fs1:nCyl*1/f; %time index

x1=cos(2*pi*f*t1);

 fs2=50e3; %5kHz sampling rate

t2=0:1/fs2:nCyl*1/f; %time index

x2=cos(2*pi*f*t2);

figure,

subplot(2,1,1);

%plot(t,x);

stem(t1,x1);

title('Sampling Continuous sinusoidal signal at f1=3kHz');

xlabel('Time(s)');

ylabel('Amplitude');

%hold on;

subplot(2,1,2);

%plot(t,x);

stem(t2,x2);

title('Sampling Continuous sinusoidal signal at f2=5kHz');

xlabel('Time(s)');

ylabel('Amplitude');

hold on;

OUTPUT:

See you with next tutorial.....