What are the basic signals?

The step, ramp, impulse, exponential, and sinusoidal functions, etc., are the basic signals. These signals may be combined by addition or subtraction to build a variety of general waveforms used in practice. Signals play an important role in life. They are used in communication, speech processing, medical science, etc.



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Signals Basic Types
  • Unit step function is denoted by u(t). It is defined as u(t) = {1t?00t<0.
  • Impulse function is denoted by d(t). ...
  • Ramp signal is denoted by r(t), and it is defined as r(t) = {tt?00t<0.
  • Parabolic signal can be defined as x(t) = {t2/2t?00t<0.
  • Signum function is denoted as sgn(t).


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