The University of Faisalabad

8/17/2019 The University of Faisalabad

1/12

The University Of aisalabad

LAB NO. 1

Objective:

To generate a sinusoidal signal in matlab.

Softwares Used:

MATLAB R2011a

Procedure:

First of all I Open the Matlab Software.

I Open the window editor. I Write the code for sinusoidal signal.

Set the initial value of wave at 0.

Set the final value of wave at 10.

The Wave lies from 0 to 10.

Then Take the screenshot of the matlab coding.

The screenshot of matlab coding is shown.

Coding of Program:

>> t=0:0.1:10;

>> y=sin(t);


2/12

>> plot(t,y);

Resulting Figure:

The following figure is shown when I pressed Enter.


3/12


LAB NO. 02

Objective:

To generate a square wave from sin wave in matlab.

Software Used:

MATLAB R2011a

Procedure:


The I Open the window editor.

After I Write the code for sinusoidal signal.

Set the initial value of wave at 0.

Set the final value of wave at 10.


Then Add the 3rd

, 5th

, 7th

… 27th

Harmonics in the sin wave. The screenshot of matlab coding is shown.

Code Of Program

>> t=0:0.1:10;

>> y=sin(t);

>>

y=sin(t)+sin(3*t)/3+sin(5*t)/5+sin(7*t)/7+sin(9*t)/9+sin(11*t)/11+sin(13*t)/13+sin(15*t

)/15+sin(17*t)/17+sin(19*t)/19+sin(21*t)/21+sin(23*t)/23;


4/12

>> plot(t,y);

Resulting Figure:



5/12


LAB NO.03

Objective:

How to generate a discrete sin wave in matlab.

Software Used:

MATLAB R2011a

Procedure:


Then I Open the window editor.

I Write the code for discrete sinusoidal signal.

Set the initial value of wave at 0. Set the final value of wave at 10.


For discrete signal use the command “stem” instead of “plot”.

The screenshot of matlab coding is shown.

Coding of Program:

>> t=0:0.1:10;

>> y=sin(t);

>> stem(t,y);


6/12

Resulting Figure:



7/12


LAB NO.04

Objective:

To generate a sin wave using linspace command in matlab.

How to generate a sin wave in matlab using linspace command.

Software Used:

MATLAB R2011a

Procedure:



I Write the code for sinusoidal signal.

Set the initial value of wave at -5.

Again Set the final value of wave at 5.

The Wave lies from -5 to 5.

Code of program:

>> x=linspace(5,-5);

>>y=sin(x);

>>plot(x,y);

>>xlabel('-5 < x < 5');


8/12

Resulting Figure:



9/12


LAB NO. 05

Objective:

To generate a sin wave using linspace command from -2π to 2π in matlab and label its

x-axis..

Tools Used:

MATLAB R2011a

PROCEDURE



I Write the code for sinusoidal signal.

Set the initial value of wave at -2π .

Again Set the final value of wave at 2π.

Then Label the x-axis from -2π to 2π.

Code of Program:

>> x=linspace(-2*pi,2*pi);

y=sin(x);

plot(x,y)

xlabel('-2/pi < x < 2/pi');


10/12

Resulting Figure:



11/12


LAB NO. 06

Objective:

To study the noise signal in sinusoidal signal.

How to interperate the noise signal.

Software Used:

MATLAB R2011a

PROCEDURE

First of all I open the Matlab Software then I open the windows editor.

After this I Write the code for noise sinusoidal signal.

The screenshot of matlab coding is shown below.

Program Code:

>> N=200;

>> T=0.05;

>> t=(0:N-1)*T;

>> s=sin(2*pi*120*t);

>> plot(t,s)


12/12

Resulting Figure:


Documents

The University of Faisalabad