Signal
Signal is a term used in various fields, including physics, engineering, and biology, to describe any function that conveys information. Signals can be either analog or digital, and they can be transmitted through various mediums, such as wire, air, water, or vacuum.
Types of Signals
There are two main types of signals: analog and digital.
Analog Signals
Analog signals are continuous in both time and value. They are often used in audio and video transmission and can be represented by a continuous waveform.
Digital Signals
Digital signals are discrete in time and value. They are often used in computing and digital electronics, where information is represented by binary code.
Signal Transmission
Signals can be transmitted through various mediums, such as wire, air, water, or vacuum. The medium used for transmission can affect the speed and quality of the signal.
Signal Processing
Signal processing is a field that focuses on the analysis, interpretation, and manipulation of signals. Signal processing techniques can be used to improve the quality of signals, extract useful information from signals, and convert signals from one form to another.
See Also
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Contributors: Prab R. Tumpati, MD
