Revision as of 17:16, 14 October 2014 by Apawling (Talk | contribs)


Questions and Comments for Frequency domain view of the relationship between a signal and a sampling of that signal

A slecture by ECE student Botao Chen

Partly based on the ECE438 Fall 2014 lecture material of Prof. Mireille Boutin.



Please post your reviews, comments, and questions below.



  • Review by Miguel Castellanos

You have a great organization of your derivations and examples. Your first derivation helps ease the transition between continuous sampled signals and discrete sampled signals. The figures are good graphical represenations of the expressions you derive. A small source of confusion is that your final figure plots a function in terms of ω but your x-axis is in terms of f. Great job, overall!

    • Author answer here

  • Review by Yerkebulan Y.
  • You gave very good explanation of difference between FT of original signal x(t), sampled signal  xs(t) and discrete signal xd[n]. Graphs in frequency domain  help to understand this difference. You did a really good job !
    • Author answer here

  • Review by Andrew Pawling

The mathematical derivations are great! The plots work and help illustrate the difference. The last plot needs to be labeled with $ \omega $ on the x-axis instead of $ f $, so that was a little confusing. But other than that, good job!

    • Author answer here

  • Review by student 4
    • Author answer here

Back to ECE438, Fall 2014

Alumni Liaison

Prof. Math. Ohio State and Associate Dean
Outstanding Alumnus Purdue Math 2008

Jeff McNeal