Definition - What does Analog Signal mean?
Analog Signal is a continuous signal that represents another time-varying signal. It is used to transfer information through electric signals. The information contained in the signal is transmitted through electric pulses when the amplitude varies. The processing of the signal can be done real-time as it consumes less bandwidth. It is portable in nature and is denoted by sine waves. A simple example of an Analog Signal is the human voice in the air.
Petropedia explains Analog Signal
Analog Signals are usually found in modern electronics to measure variations in physical phenomena including sound, light, temperature and pressure. The physical variations are converted to signals through a device known as a transducer. It has infinite resolution thus used in various communication channels and signal processing operations. The audio and video transmissions are recorded using Analog Signals. The signals are simple, reliable and easy to understand. Thermometers are one of examples that use Analog Signals to measure the temperature. However, they are affected by noise thus their accuracy is affected.