WelCome to: Matlab Projects Library !!!

Zone : EE1 Projects (www.hellozubair.uni.cc

COMSATS Institute of IT,Lahore

Basic Concepts of Digital Signal Processing

MATLAB Demos

Click on the links below to download the zipped MATLAB 6 sources as well as the input and output data or click here to download everything as one big ZIP.

Audio Signal Processing

Aliasing demo, MATLAB sources
Aliasing demo, output sound
Aliasing demo, output video with sound (7.895 KB)

Digital Image Processing

Image formation and interpretation of 2D-DFT, MATLAB sources
Aliasing demo, MATLAB sources and input image (image source: http://www.ctr.columbia.edu/~sfchang/course/dip/demos/Aliasing.html) Aliasing demo, output video (spatial domain) (approx. 2.600 KB) Aliasing demo, output video (spectral domain) (approx. 7.900 KB)
Test image "cameraman.tif", also included in MATLAB image toolbox
Box averaging filter, MATLAB sources Box averaging filter, 3D-plot Box averaging filter, 3D-plot of transfer function Box averaging filter, image series for different filter orders Box averaging filter, image series for different filter orders with noise Box averaging filter, video (approx. 1 MB)
Circular averaging filter, MATLAB sources Circular averaging filter, 3D-plot Circular averaging filter, 3D-plot of transfer function Circular averaging filter, image series for different filter orders Circular averaging filter, video (approx. 1 MB)
Gaussian filter, MATLAB sources Gaussian filter, 3D-plot Gaussian filter, 3D-plot of transfer function Gaussian filter, image series for different filter orders Gaussian filter, video (approx. 1 MB)
Laplacian edge detection filter, MATLAB sources Laplacian edge detection filter, 3D-plot Laplacian edge detection filter, 3D-plot of transfer function Laplacian edge detection filter, image series for different shape parameters Laplacian edge detection filter, image series for different shape parameters with noise
Laplacian of Gaussian edge detection filter, MATLAB sources LoG edge detection filter, 3D-plot LoG edge detection filter, 3D-plot of transfer function LoG edge detection filter, image series for different filter orders LoG edge detection filter, image series for different filter orders with noise LoG edge detection filter, video (approx. 1 MB)
Median filter, MATLAB sources Median filter, image series for different filter orders with noise

(External) Important Links for Visitors

http://ptolemy.eecs.berkeley.edu/eecs20/week13/moire.html
http://www.ctr.columbia.edu/~sfchang/course/dip/demos/Aliasing.html

Matlab Programs for Math 4457

Main routines

dspr.m - normal modes of oscillation of linear mass & spring system
gspr.m - graph oscillations of linear mass & spring system
cspr.m - show oscillations of linear mass & spring system
mspr.m - show oscillations and normal components of linear mass & spring system
dyst.m - dynamical modes of oscillation of 2D or 3D structure
network.m - finds potentials and currents in electrical networks
strut.m - graphs a structure in two or three dimensions, and determines its stability
graph.m - finds incidence matrix and plots a graph
quasi.m - plot quasi-periodic function (2 modes)
quasi3.m - plot quasi-periodic function (3 modes)

Computational subroutines

incidence.m - computes incidence matrix from edge matrix
ngon.m - finds coordinates for unit polygon
solids.m - edge matrices and vertices for regular solids
house.m - edge matrices and vertices for houses
tr3.m - linear transformations of multiple points

Graphics subroutines

button.m - sets up buttons for interacting with dynamical graphics
circle.m - draws circles
triangle.m - draws triangles
linevec.m - draws lines using vector coordinates
arrowvec.m - draws directed lines using vector coordinates
textvec.m - writes text at specified coordinates

Matlab Programs for Math 5457

Main routines

Qplot.m - for graphing quadratic functions
ellipse.m - graphs ellipses and their principal axes
ellipsoid.m - graphs ellipsoids and their principal axes
network.m - finds potentials and currents in electrical networks
strut.m - graphs a structure in two or three dimensions, and determines its stability
graph.m - finds incidence matrix and plots a graph
cgraph.m - finds incidence matrix and plots complete graph
ograph.m - finds incidence matrix and plots circular graph

Computational subroutines

incidence.m - computes incidence matrix from edge matrix
cedge.m - finds edge matrix for complete graph
oedge.m - finds edge matrix for circular graph
cgon.m - finds edge matrix and vertex coordinates for complete graph
ogon.m - finds edge matrix and vertex coordinates for circular graph
ngon.m - finds coordinates for unit polygon
solids.m - edge matrices and vertices for regular solids
house.m - edge matrices and vertices for houses
tr3.m - linear transformations of multiple points

Graphics subroutines

circle.m - draws circles
triangle.m - draws triangles
linevec.m - draws lines using vector coordinates
arrowvec.m - draws directed lines using vector coordinates
textvec.m - writes text at specified coordinates

Matlab Programs for Math 5458

Main routines

phase3.m - phase portrait of 3D ordinary differential equation
heat.m - numerical solution of 1D heat equation (Crank-Nicholson method)
wave.m - numerical solution of 1D wave equation (finite difference method)
go2.m - graph solutions to planar linear o.d.e.'s
go3.m - graph solutions to three-dimensional linear o.d.e.'s
dspr.m - normal modes of oscillation of linear mass & spring system
gspr.m - graph oscillations of linear mass & spring system
cspr.m - show oscillations of linear mass & spring system
mspr.m - show oscillations and normal components of linear mass & spring system
dyst.m - dynamical modes of oscillation of 2D or 3D structure
phase.m - phase portrait of 2D ordinary differential equation
phaseg.m - phase portrait plus graph of second order ordinary differential equation
phasem.m - phase portrait plus movie of pendulum motion

Computational subroutines

o3.m - a simple 3D differential equation
fset.m - set up for Fourier sine series
fsine.m - plot Fourier sine series
fset2.m - set up for Fourier series
fouri.m - plot Fourier series
lo2.m - general planar linear first order o.d.e.
lo3.m - general three-dimensional linear first order o.d.e.
button.m - sets up buttons for interacting with dynamical graphics
quasi.m - plot quasi-periodic function (2 modes)
quasi3.m - plot quasi-periodic function (3 modes)
pendulum.m - nonlinear pendulum differential equations
dpendulum.m - damped nonlinear pendulum differential equations
fpendulum.m - forced nonlinear pendulum differential equations
fdpendulum.m - forced damped nonlinear pendulum differential equations

Matlab Programs for Math 5485

rn.m - rounding function
iter.m - function iteration
secant.m - secant method
newton.m - Newton's method
gauss.m - regular Gaussian elimination
gaussr.m - alternative regular Gaussian elimination
back.m - back substitution
trid.m - generate tridiagonal matrices
specr.m - compute spectral radius of a matrix
miter.m - matrix iteration
jacobi.m - Jacobi iteration
gs.m - Gauss-Seidel iteration
sor.m - SOR iteration
sorw.m - optimal SOR parameter
sorad.m - compute SOR spectral radius
newton3.m - solve z^3 = 1 by Newton's method
robot.m - position robot arms by Newton's method
lagrangep.m - Lagrange interpolating polynomial
lagrangeplot.m - Plot Lagrange interpolating polynomial
ix2.m - the function 1/(1+x^2)

Matlab Programs for Math 5486

numode.m - general-purpose numerical ordinary differential equation solver and grapher
Euler method: neuler.m neulerf.m
Improved Euler method: ieuler.m ieulerf.m
Midpoint method: midp.m midpf.m
Fourth Order Runge-Kutta: rk4.m rk4f.m
Sample Differential Equations:
- Scalar ode du/dt = (1 - 4t/3)u: gv.m Solution: gvs.m
- Undamped pendulum: upend.m
- Damped pendulum: dpend.m
- Van der Pol oscillator: vpd.m
- Predator-prey model: pp.m

http://www.math.umn.edu/~olver

Libraries of Matlab m-files and Toolboxes

Here are some collections of DSP-related Matlab™ m-files and toolboxes which are available on the Internet.

General M-file Collections

Matlab 5 User M-Files - A collection of user-contributed m-files hosted by The Mathworks, the maker of Matlab.
Mathtools.net - Also provided by The Mathworks, this is a very comprehensive index of scientific and computing engineering resources, including a Matlab section.
Octave Source - Octave is a high-quality Matlab clone which is nearly 100% compatible with Matlab. Octave's source contains a large number of m-files, including many files for signal processing and control applications.
Scilab Source - Scilab is another high-quality Matlab clone. Although Scilab is not 100% compatible with Matlab, the large collection of Scilab functions which come with the Scilab source (including many functions similar to Matlab's "DSP Toolbox") can be converted into m-files fairly easily. This makes the Scilab source a great reference for Matlab users.

Filter Design

DFP - The Digital Filter Package (DFP) is a user-friendly GUI front end for doing digital filter design with Matlab. (Requires the Signal Processing Toolbox.)
Exchange Algorithms Complementing the Parks-McClellan Algorithm - These programs design symmetric equiripple FIR filters achieving specified Chebyshev errors in each band.

Adaptive Filtering

Adaptive Filter Library - A collection of m-files for various adaptive filtering algorithms.

FFT

FFT Programs for Prime Lengths - Matlab programs to illustrate the algorithm described in the paper Automatic Generation of Prime-Length FFT Programs.

Frequency Analysis

Time-Frequency Toolbox - The Time-Frequency Toolbox is a collection of about 100 M-files developed for the analysis of non-stationary signals using time-frequency distributions.
Some Frequency Estimation Algorithms - This page hosts m-files for estimating the frequency of a single constant tone in the presence of noise.

Wavelets

WaveLab - WaveLab is a library of Matlab routines for wavelet analysis, wavelet- packet analysis, cosine-packet analysis and matching pursuit.
Wavekit - Wavekit is a collection of functions for Matlab that implement several wavelet and wavelet packet algorithms.

http://www.math.umn.edu/~olver/matlab.html

Ask Me Any Problem ,Confusion or Questions???

Thanks , M.Zubair Shabbir Pansota.