Revision as of 12:25, 14 October 2014 by Skwon (Talk | contribs)


Questions and Comments for

DTFT of a Cosine Sampled Above and Below the Nyquist Rate

A slecture by ECE student Sahil Sanghani



Please post your reviews, comments, and questions below.



  • Review by Yijun Han

The derivations are clear and concise. When sampling at a sample frequency below the Nyquist rate, the reason why aliasing occurs is well explained. But there is a typo on the second figure. The frequency of the last delta should be 2pi*330/550 instead of 2pi*770/550.

    • Author answer here

  • Review Soonho Kwon

I like the fact that you have used specific numbers for the example part. By doing so, it was actually very easy to understand. However, I wish there were a little bit more explanation of how the equations progress.

    • Author answer here

  • Review by student 3
    • Author answer here

  • Review by student 4
    • Author answer here

Back to ECE438, Fall 2014

Alumni Liaison

Correspondence Chess Grandmaster and Purdue Alumni

Prof. Dan Fleetwood