Worcester Polytechnic Institute

What is a Signal?

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A signal is a function of time (t) that is representing some type of information.  A heart rate on an EKG in a hospital is a signal.  The information being transfers from your VCR to your TV is a signal.  Everything we hear around us are sound signals being received and interpreted by our brain.  The electricity through our houses is a 120V 60Hz Sine Wave.  Signals are all around us.

 

Return to the vector – signal analogy table.

 

 

 

 

 

 

 

 

 

 

 

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