What is an analog signal

The analog signal is a continuously changing signal. Its value changes with time and can take values ​​within the entire continuous range. The analog signal can be represented by an infinite number of values, and there is continuity between adjacent values. Relationship, analog signals can be directly generated through physical phenomena, or they can be processed and transmitted through analog circuits.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

The analog signal is a continuously changing signal. Its value changes with time and can take values ​​within the entire continuous range. Analog signals can be represented by an infinite number of values, and there is a continuous relationship between adjacent values.

In analog signals, time and value are continuous, so they can be infinitely broken down into smaller time periods to represent. For example, sound waveforms, light intensity, and temperature changes can all be described as analog signals.

Analog signals can be generated directly through physical phenomena, such as sound converted into a voltage signal through a microphone, or light converted into a current signal through a photosensitive element. It can also be processed and transmitted through analog circuits.

The opposite of analog signals is digital signals. A digital signal is discrete and can only be represented by a limited number of discrete values ​​to represent an approximation of a continuous analog signal. In digital signals, both time and value are discrete.

Analog signals are widely used in many fields, including audio processing, video processing, communication systems, sensor technology, etc. However, since analog signals are susceptible to noise and distortion, the application of digital signals is gradually increasing because digital signals have better immunity to interference and fault tolerance.

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