Is there an example of an infinite signal? [closed]

1. Which signal has infinite duration?
2. Are periodic signals infinite?
3. What is the difference between a continuous signal and a discrete signal?
4. What is a continuous-time signal?

Which signal has infinite duration?

Infinite Duration Signals A discrete signal x[n] is finite duration if there exists two integers -∞ < N1 ≤ N2 < ∞, such that x[n] ≠ 0 only for N1 ≤ n ≤ N2. Otherwise, it is of infinite duration. Right-sided, Left-sided, and Two-sided Signals The terms apply only to infinite duration signals.

Are periodic signals infinite?

A periodic signal is a power signal if its energy content per period is finite. Normally for power signal energy is infinite but for a periodic energy signal, energy per period is finite.

What is the difference between a continuous signal and a discrete signal?

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 is a continuous-time signal?

A continuous-time (CT) signal is a function, s(t), that is defined for all time t contained in some interval on the real line. For historical reasons, CT signals are often called analog signals.