(Discrete Time)
(Discrete Time)
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For a given integer value 'A'
 
For a given integer value 'A'
  
<center>[[Image
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<center>[[Image:Ccadwall-DT_periodic_ECE301Fall2008mboutin.png]]</center>
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http://www.dsprelated.com/dspbooks/mdft/Shift_Operator.html
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===Non Periodic Signal===
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A non periodic signal is one that cannot satisfy:
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<math> x[n] = x[n + A] </math>
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For any integer value 'A'
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<center>[[Image:Ccadwall-DT_nonperiodic_ECE301Fall2008mboutin.png]]</center
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http://www.vocw.edu.vn/content/m10810/latest/

Revision as of 06:01, 5 September 2008

Continuous Time

Periodic signals

A periodic signal is one that for a given real number "a": $ x(t) = x(t+a) $

Ccadwall-periodicwaves ECE301Fall2008mboutin.png

http://en.wikibooks.org/wiki/Signals_and_Systems/Periodic_Signals


Non Periodic signals

Non-periodic signals are those which no value of "a" satisfies the following equation. $ x(t) = x(t+a) $

Ccadwall-audio signal ECE301Fall2008mboutin.png

http://ac3filter.net/files/docs/ac3filter_1_30b/loudness_eng.html

Discrete Time

Periodic Signal

A periodic discrete time signal is one that satisfies :

$ x[n] = x[n + A] $

For a given integer value 'A'

Ccadwall-DT periodic ECE301Fall2008mboutin.png

http://www.dsprelated.com/dspbooks/mdft/Shift_Operator.html

Non Periodic Signal

A non periodic signal is one that cannot satisfy:

$ x[n] = x[n + A] $

For any integer value 'A'

Ccadwall-DT nonperiodic ECE301Fall2008mboutin.png</center http://www.vocw.edu.vn/content/m10810/latest/

Alumni Liaison

Correspondence Chess Grandmaster and Purdue Alumni

Prof. Dan Fleetwood