Friday 28 November 2014

Continuous and Discrete Time Signal & Analog and Digital Signal

Continuous And Discrete Time Signal 

A signal x(t) is a continuous-time signal if t is a continuous variable. If t is a discrete variable, that is, x(t) is defined at discrete times, then x(t) is a discrete-time signal.a discrete-time signal is often identified asa sequence of numbers, denoted by {x,) or x[n], where n = integer




Analog And Digital Signal 


  • If a continuous-time signal x(l) can take on any value in the continuous interval (a, b),where a may be - 03 and b may be + m, then the continuous-time signal x(t) is called analog signal
  • If a discrete-time signal x[n] can take on only a finite number of distinct values, then we call this signal a digital signal.

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