Lecture 4 Blog, ECE438 Fall 2010, Prof. Boutin

Monday August 30, 2010.

In the fourth lecture, we obtained the frequencies of the notes in the middle scale of a piano. We then computed the CTFT of signal that would "sound" like a middle C and the CTFT of a signal that would "sound" like the next higher C. We also obtained the DTFT of a sampling of each of these signals (using the same sampling frequency). It was observed that, while the sampling of middle C yields a DT signal that also sounds like a middle C, the sampling of the higher C does not at all sound like a C.

Relevant links:

Seems like students have little recollection of the sampling material from ECE301. We shall fix this!

Any comments/questions? Please write them below.

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