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ECE 438 is about digital signals and systems. | ECE 438 is about digital signals and systems. | ||
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-things are intuitive along with computers, MATLAB, | -things are intuitive along with computers, MATLAB, | ||
-easy math and digital circuits. | -easy math and digital circuits. | ||
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| + | [[ ECE438 (BoutinFall2009)|Back to ECE438 (BoutinFall2009)]] | ||
Revision as of 08:42, 21 September 2009
ECE 438 is about digital signals and systems.
What is a digital signal? A signal that can be represented by a sequence of 0's and 1's. The signal must be discrete time (D.T.): x[n], n e Z The signal values must come from a discrete and finite signal. e.g. x[n] e {0,1}
x[n] e {0,1,2,3,...,255} (grayscale values)
The digital system
digital signal -> system -> digital signal
Three main types Software (MATLAB, C Program) Firmware Hardware
Advantages of digital signals & systems Digital Systems are: -precise -reproducible -easy to build -adaptable -easy to upgrade/fix -can be saved on bistable storage device
x(t) CT World -------------------> x[n] DT World -most natural signals live here -digital media lives here -things are intuitive along with computers, MATLAB, -easy math and digital circuits.
