Howtosignalprocessing
- How do you know if a signal is discrete?
- How do you tell if a signal is discrete or continuous?
- What makes a signal discrete?
- What is an example of a discrete signal?
How do you know if a signal is discrete?
A discrete time signal is denoted s(n) or sn, where n is an integer and the value of s can be real or complex. It comes from a sampling or discretization of a continuous signal s(t) with t = n∆, where ∆ > 0 is a discrete time step known as the sampling interval. A discrete signal is called digital.
How do you tell if a signal is discrete or continuous?
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.
What makes a signal discrete?
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.
