Application of continuous-time signal

1. What is the example of continuous-time signal?
2. What are the real life examples of discrete-time signal?
3. What are the application of discrete signal?
4. Why do we sample the continuous-time signal?

What is the example of continuous-time signal?

The wind speed is a continuous-time signal, because you can take a reading at any time.

What are the real life examples of discrete-time 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 are the application of discrete signal?

DSP has penetrated many domains of applications, such as digital communications, medical imaging, audio & video systems, consumer electronics, robotics, remote sensing, finance etc. The Discrete-Time Signal Processing paradigm is a convenient setting to analyse the basic principles of DSP.

Why do we sample the continuous-time signal?

If samples of a bandlimited continuous-time signal are taken frequently enough, then they are sufficient to represent the signal exactly. The continuous-time signal can then be recovered from the samples. This task is ideally performed by a discrete-to-continuous-time (D/C) converter.