Analog Signal

Analog Signal

 An analog signal is a continuous wave that represents a physical quantity, such as sound, light, or temperature, as an electrical voltage or current that varies over time. Unlike digital signals, which are composed of discrete values, analog signals can take on any value within a range of values, and they change continuously over time.

For example, a microphone converts sound waves into an analog electrical signal that can be transmitted over a cable to an amplifier, which increases the strength of the signal. The analog signal is then sent to a speaker, which converts the electrical signal back into sound waves.

Analog signals can be affected by noise, distortion, and attenuation as they travel over long distances or through different media. To minimize these effects, analog signals are often amplified and filtered to remove unwanted noise and interference.

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