What Is a Signal?
A signal is a form of communication that conveys information from one point to another. Signals can be used in many different ways, such as transmitting data between two computers or sending an alert to a person’s phone. Signals are typically sent through electrical signals, radio waves, light pulses, and sound waves. In some cases, they may also be transmitted via chemical reactions or other forms of energy transfer.
Signal processing is the process of analyzing and manipulating signals for various purposes. This includes extracting useful information from the signal itself as well as modifying it in order to improve its quality or accuracy. Signal processing techniques are widely used in fields such as telecommunications, audio engineering, medical imaging, radar systems and more. It is also important for understanding how biological systems work since all living organisms rely on signals for communication and coordination within their bodies.