Saturday, November 14, 2009

Causal and Noncausal Systems

A system is called causal if its output y ( t ) at an arbitrary time t = t,, depends on only
the input x ( t ) for t It o. That is, the output of a causal system at the present time depends
on only the present and/or past values of the input, not on its future values. Thus, in a
causal system, it is not possible to obtain an output before an input is applied to the
system. A system is called noncausal if it is not causal. Examples of noncausal systems are


Note that all memoryless systems are causal, but not vice versa.

5 comments:

  1. what is the practical example of causal signal ??

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  2. what is the practical example of causal signal ??

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  3. This comment has been removed by the author.

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  4. can you also give the video of casual and non casual signals
    CET and JOB

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