Lecture 2 Blog, ECE438 Fall 2015, Prof. Boutin
Wednesday August 26, 2015 (Week 1) - See Course Outline.
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Today I introduced the concepts of digital signals and digital systems. We looked at some applications of digital signal processing, including
- Historical Preservation: Original Caruso (1904) versus Caruso digitally processed
- A software to remove the sound of vuvuzelas at World Cup of Soccer, 2010.
- "Enhanced" George Zimmerman video
After that, I explained how to transition from the continuous-time Fourier transform in terms of $ \omega $, which you have seen in ECE301, to the continuous-time Fourier transform in terms of f. We then saw a few important properties of the CTFT (duality, multiplication, and convolution) and we computed the Fourier transform of some basic signals (Dirac delta and complex exponential.) Some subtleties regarding the rescaling of the Dirac delta were observed.
Relevant Rhea pages previously created by students:
Do you see any mistake in these pages? Do you have questions? Feel free to write comments directly on these pages. But if you wish them to modify them completely, please make a copy of the source code on a new page and make your modifications there. In other words: do not completely destroy other people's work.
Action Items
- HW1, due Wednesday September 2, 2015
Questions/Comments
- Post question here
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