Lecture 14 Blog, ECE438 Fall 2013, Prof. Boutin
Friday September 20, 2013 (Week 5) - 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 continued talking about sampling. This time, we focused on the relationship between a discrete-time represesentattion of a sampling $ x_d[n]=x(nT) $ and the original signal x(t). We noted that, in the Fourier domain, the signals differ in three ways (repetition, amplitude, scale).
There was a short quiz at the beginning of the lecture. This was the second quiz of the semester, and of course it was just for practice.
Action Items
- Begin working on the fifth homework. It's due Friday.
- Begin preparing for the first test:
- Review the difference between CTFT and DTFT.
- study the sampling of pure frequencies (e.g., HW2) and make sur you understand how this fits into the general pattern of sampling which we covered today.
Previous: Lecture 13 Next: Lecture 15
