ELEC 320 Class Notes and Demonstrations, Fall 1998

• Friday, September 4: Demonstration of first-, second-, and third-order filters
  • Matlab file filord.m (run on Sun computers)
  • Original music filx.au
  • First-order filter fily1.au
  • Second-order filter fily2.au
  • Third-order filter fily3.au

• Friday, September 18: Class notes on Chapter 2

• Wednesday, October 14: MATLAB/Simulink program fsgen.mdl to experiment with Fourier series

  To run the program on the Sun computers:

  1. Download the file fsgen.mdl to your account
  2. Start MATLAB
  3. Type fsgen at the MATLAB prompt
  4. Under the Simulation menu, choose Start
  5. Open the "slider gains" by double-clicking on them
  6. Click the binocular icon on the plots to rescale the axes
  7. Choose Start after each change of slider gains to see results
  8. Try to build a square wave and a triangle wave

  The following program runs on older versions of MATLAB/Simulink: fsgen.m
  This is the program that was demonstrated in the classroom.

• Monday, October 19: MATLAB program fstrun.m to plot truncated Fourier series of square wave

• Friday, October 23: MATLAB program sqrfilt.m to plot square wave that is filtered by a low-pass RC circuit with RC = 1.

• Wednesday, December 2: MATLAB commands for partial fraction expansion