Revision as of 13:17, 12 September 2008 by Drmorris (Talk)

Part 1

Choose the signal $ x(t)=cos(t) $ which is periodic.

File:Ctsignal.jpg
300px

Sampling ever interger yields

File:Dtsignal.jpg
300px

This is $ x[n]=cos(n) $

but sampling at a frequency of $ \pi/4 $ yields

File:Dtsignal1.jpg
300px

This is $ x[n]=cos(\pi/4n) $

Part 2

choose
File:Dtsignal.jpg
300px

This is $ x(t) $

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