# Lecture 17 Blog, ECE438 Fall 2014, Prof. Boutin

Friday October 3, 2014 (Week 6) - See Course Outline.

Jump to Lecture 1, 2, 3 ,4 ,5 ,6 ,7 ,8 ,9 ,10 ,11 ,12 ,13 ,14 ,15 ,16 ,**17** ,18 ,19 ,20 ,21 ,22 ,23 ,24 ,25 ,26 ,27 ,28 ,29 ,30 ,31 ,32 ,33 ,34 ,35 ,36 ,37 ,38 ,39 ,40 ,41 ,42 ,43 ,44

Today we derived a "practical" formula for reconstructing the DTFT of a finite duration signal from the DFT coefficients of the periodic repetition of the signal. We then began talking about the FFT. In particular, we looked at the "butterfly" representing a 2-point DFT.

## Action Items

- Finish HW5. It's due Monday.
- Work on your slecture if you haven't finished it yet.
- Work on reviewing slectures.

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Next: Lecture 18