Time-reversal and delay commutativity and resulting signals

1. What is time reversal in signal and system?
2. What is time reversal method?
3. How do you find the time reversal signal?
4. What are the two types of shifting operation can be performed on signals?

What is time reversal in signal and system?

The time reversal of a signal is folding of the signal about the time origin (or t = 0). The time reversal or folding of a signal is also called as the reflection of the signal about the time origin (or t = 0). Time reversal of a signal is a useful operation on signals in convolution.

What is time reversal method?

Time reversal is a technique to focus wave energy to a selected point in space and time, localize and characterize a source of wave propagation, and/or communicate information between two points.

How do you find the time reversal signal?

Whenever the time in a signal gets multiplied by -1, the signal gets reversed. It produces its mirror image about Y or X-axis. This is known as Reversal of the signal. Reversal can be classified into two types based on the condition whether the time or the amplitude of the signal is multiplied by -1.

What are the two types of shifting operation can be performed on signals?

According to the sign of k value, we have two types of shifting named as Right shifting and Left shifting.