Howtosignalprocessing
- What is a discrete time sequence?
- What is the difference between discrete time signals and sequences?
- How are discrete time signals classified explain?
- Why do we use discrete time steps instead of continuous-time?
What is a discrete time sequence?
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 the difference between discrete time signals and sequences?
Continuous-time signals are often referred to asanalog signals. Discrete-time signalsare defined at discrete times, and thus, the independent variable has discrete values; that is, discrete-time signals are represented as sequences of numbers.
How are discrete time signals classified explain?
Discrete time signals can be classified as follows: Even and odd signals. Periodic and non-periodic signals. Deterministic and random signals.
Why do we use discrete time steps instead of continuous-time?
Sampling discrete-time signals, i.e., using only every Nth sample of a sequence of samples, is useful for efficiently processing, transmitting, or storing information, if we can be sure that the sampling rate can be reduced without significant loss of information.
