Signal

Discrete and Continuous Signals

Discrete and Continuous Signals

A continuous-time signal has values for all points in time in some (possibly infinite) interval. A discrete time signal has values for only discrete points in time.

  1. What is a discrete signal?
  2. What is an example of a discrete signal?
  3. What is the difference between continuous and discrete-time?
  4. Which signal is continuous signal?

What is a discrete signal?

A discrete-time signal is a sequence of values that correspond to particular instants in time. The time instants at which the signal is defined are the signal's sample times, and the associated signal values are the signal's samples.

What is an example of a discrete signal?

Discrete-time signal: the variable of time is discrete. The weekly Dow Jones stock market index is an example of discrete-time signal.

What is the difference between continuous and discrete-time?

A primary difference between discrete-time and continuous-time models is that the latter take into account the exact time interval between measurements while the former do not—discrete-time models assume equally spaced time-intervals.

Which signal is continuous signal?

A signal is considered to be a continuous time signal if it is defined over a continuum of the independent variable. A signal is considered to be discrete time if the independent variable only has discrete values.

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