Educational Matlab GUIs

On this page are Graphical User Interfaces developed by the members of the Center for Signal and Information Processing (CSIP), a part of the School of Electrical and Computer Engineering at the Georgia Institute of Technology.

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Most of these GUIs appear in the textbook DSP First (2nd edition),
and also in the textbook Signal Processing First,
/ A Pearson Education Company / Upper Saddle River, New Jersey 07458

Filter Design Demo
 The Filter Design Demo is a program that designs simple FIR and IIR digital filters, along with tutorial visualizations of the filter design process. Features: Parks-McClellan FIR Design showing the iterations of the Remez Exchange method FIR Design with many different window types IIR Design of Butterworth filters Numerous plot options: magnitude/phase response, pole-zero diagram, and impulse response MATLAB Command Name:   filterdesign Download: Filter Design Demo (Version 2.81) Requirements:   Matlab 7.2 or greater Tested on:   UNIX, Windows and Macintosh Last update:   10-Apr-2015

PEZdemo
 PEZdemo allows the user to select the poles and zeros of a system and then change those poles and zero dynamically. The z-plane, Fourier domain and time-domain are all updated simultaneously.MATLAB Command Name:   pezdemo Download: PEZdemo (Version 2.88) Requirements:   Matlab 6.0 or greater Tested on:   Windows Last update:   10-Apr-2015

FourierSeries
 FourierSeriesDemo is a GUI that shows Fourier Series synthesis for different number of Fourier coefficients. Different signals can be selected: square wave, sawtooth, triangle and rectified sinusoids.MATLAB Command Name:   fseriesdemo Download: FourierSeriesDemo (Version 1.43) Requirements:   Matlab 6 or greater Tested on:   Windows, Linux Last update:   10-Apr-2015

PhasorRaces
 PhasorRaces began as a speed drill for testing complex addition. Now it includes many other related operations that can be tested in a “drill” scenario: adding sinusoids, z-transforms, etc. A timer starts as soon as the problem is posed, so that a student can try to solve questions quickly and accurately.MATLAB Command Name:   phrace Download: PhasorRaces (Version 1.14) Requirements:   Matlab 6 or greater Tested on:   Windows Last update:   10-Apr-2015

SinDrill
 SinDrill is a program that tests the users ability to determine basic parameters of a sinusoid. After a plot of a sinusoid is displayed, the user must correctly guess its amplitude, frequency, and phase.MATLAB Command Name:   sindrill Download: SinDrill (Version 2.11) Requirements:   Matlab 6 or greater Tested on:   UNIX, Windows and Macintosh Last update:   10-Apr-15

ZDrill
 ZDrill is a program that tests the users ability to calculate the result of simple operations on complex numbers. The program emphasizes the vectorial view of a complex number. The following six operations are supported: Add Subtract Multiply Divide Inverse Conjugate MATLAB Command Name:   zdrill Download: ZDrill (Version 2.12) Requirements:   Matlab 6 or greater Tested on:   UNIX, Windows and Macintosh Last update:   10-Apr-2015

CLTIDemo
 CLTIDemo is a program that illustrates the relationship between the input and output of a continuous-time linear time-invariant (LTI) filter when the input is a sinusoidal signal. The user is allowed to control the parameters of both the input sinusoid and the analog LTI filter.MATLAB Command Name:   cltidemo Download: CLTIDemo (Version 2.55) Requirements:   Matlab 6 or greater Tested on:   UNIX, Windows and Macintosh Last update:   10-Apr-2015

DLTIDemo
 DLTIDemo is a program that illustrates the relationship between the input and output of a discrete-time linear time-invariant (LTI) filter when the input is a sinusoidal signal. The user is allowed to control the parameters of both the input sinusoid and the digital filter.MATLAB Command Name:   dltidemo Download: DLTIDemo (Version 2.72) Requirements:   Matlab 6 or greater Tested on:   UNIX, Windows and Macintosh Last update:   10-Apr-15

Continuous-Discrete Sampling Demo
 The Continuous-Discrete Sampling Demo is a program that shows the continuous and discrete spectra (and signals) during sampling. Features: Users can change the input frequency and sampling rate. Frequency axis can be labeled in hertz or radians/sec. Reconstruction through D/A is also shown. MATLAB Command Name:   con2dis Requirements:   Matlab 6 or greater (not yet tested on Macintosh) Tested on:   UNIX, Windows Last update:   20-Jun-2015

Discrete Convolution Demo
 The Discrete Convolution Demo is a program that helps visualize the process of discrete-time convolution. Features: Users can choose from a variety of different signals. Signals can be dragged around with the mouse with results displayed in real-time. Tutorial mode lets students hide convolution result until requested. Various plot options enable the tool to be effectively used as a lecture aid in a classroom environment. MATLAB Command Name:   dconvdemo Requirements:   Matlab 6 or greater Tested on:   UNIX, Windows and Macintosh Last update:   24-Jun-2015

Continuous Convolution Demo
 The Continuous Convolution Demo is a program that helps visualize the process of continuous-time convolution. Features: Users can choose from a variety of different signals. Signals can be dragged around with the mouse with results displayed in real-time. Tutorial mode lets students hide convolution result until requested. Various plot options enable the tool to be effectively used as a lecture aid in a classroom environment. MATLAB Command Name:   cconvdemo Requirements:   Matlab 6 or greater Tested on:   UNIX, Windows and Macintosh Last update:   10-Apr-2015