electronics and communication (B. Tech/ B. E): Matlab program to generate a sinusoidal waveform

Program Code

%sinusoidal waveform generation
clc;
clear all;
close all;
f=1000;
t=0:1/(f*1000):2/f;
y=sin(2*pi*f*t);
plot (t,y);
xlabel ('Time');
ylabel ('Amplitude');
title ('Sinusoidal Waveform');
grid on;

Output

Explanation of Program Code

clc;

It clears all input and output from the Command Window display giving clean screen. It removes items from workspace, freeing up system memory. After using clc, the scroll bar cannot be used to see the history of functions, but still the up arrow can be used to recall statements from the command history.

clear all;

It removes all variables from the workspace. This frees up system memory.

close all;

It deletes all figures whose handles are not hidden.

f=1000;

It stores the value 1000 in variable f.

t=0:1/(f*1000):2/f;

Here the following vector t is created.

t= Columns 1 through 5

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Columns 1421 through 1425

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Columns 1456 through 1460

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Columns 1461 through 1465

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Columns 1466 through 1470

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Columns 1471 through 1475

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Columns 1476 through 1480

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Columns 1481 through 1485

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Columns 1486 through 1490

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Columns 1491 through 1495

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Columns 1496 through 1500

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Columns 1501 through 1505

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Columns 1506 through 1510

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Columns 1511 through 1515

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Columns 1516 through 1520

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Columns 1521 through 1525

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Columns 1526 through 1530

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Columns 1531 through 1535

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Columns 1536 through 1540

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Columns 1541 through 1545

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Columns 1546 through 1550

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Columns 1551 through 1555

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Columns 1556 through 1560

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Columns 1561 through 1565

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Columns 1566 through 1570

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Columns 1571 through 1575

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Columns 1576 through 1580

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Columns 1581 through 1585

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Columns 1586 through 1590

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Columns 1591 through 1595

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Columns 1596 through 1600

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Columns 1601 through 1605

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Columns 1606 through 1610

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Columns 1611 through 1615

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Columns 1616 through 1620

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Columns 1621 through 1625

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Columns 1626 through 1630

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Here this vector t is used as time axis(x axis) while plotting sinusoidal waveform.

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

It is used to create sinusoidal waveform.

It multiplies each element of vector t with (2x 3.14x1000) and returns the circular sine of the elements of resulting vector.

Here f=1000. pi is always 3.14 approximately(constant).

That is why 2*pi*f*t = (2x 3.14x1000).

plot (t,y);

It plots all the lines defined by t versus y pairs.

xlabel ('Time');

It labels the x-axis as 'Time'. Each axes graphics object can have one label for the x-, y-, and z-axis. The label appears beneath its respective axis in a two-dimensional plot.

ylabel ('Amplitude');

It labels the y-axis as ' Amplitude. '

title ('Sinusoidal Waveform');

It outputs the phrase 'Sinusoidal Waveform' above the figure at the top.

grid on;

It adds major grid lines to the current axes.

__________________

electronics and communication (B. Tech/ B. E)

Pages

Matlab program to generate a sinusoidal waveform

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