What is an Analog Signal?

Analog Signal

Analog signal is a continuous signal in which one time-varying quantity represents another time-based variable. These kind of signals works with physical values and natural phenomena such as earthquake, frequency, volcano, speed of wind, weight, lighting, etc.

Characteristics OF Analog Signal

Here, are essential characteristics of Analog Signal

These type of electronic signals are time-varying
Minimum and maximum values which is either positive or negative.
It can be either periodic or non-periodic.
Analog Signal works on continuous data.
The accuracy of the analog signal is not high when compared to the digital signal.
It helps you to measure natural or physical values.
Analog signal output form is like Curve, Line, or Graph, so it may not be meaningful to all.

Advantages of Analog Signals

Here, are pros/benefits of Analog Signals

Easier in processing
Best suited for audio and video transmission.
It has a low cost and is portable.
It has a much higher density so that it can present more refined information.
Not necessary to buy a new graphics board.
Uses less bandwidth than digital sounds
Provide more accurate representation of a sound
It is the natural form of a sound.

Disadvantages of Analog Signals

Here are cons/drawback of Analog Signals:

Analog tends to have a lower quality signal than digital.
The cables are sensitive to external influences.
The cost of the Analog wire is high and not easily portable.
Low availability of models with digital interfaces.
Recording analog sound on tape is quite expensive if the tape is damaged
It offers limitations in editing
Tape is becoming hard to find
It is quite difficult to synchronize analog sound
Quality is easily lost
Data can become corrupted
Plenty of recording devices and formats which can become confusing to store a digital signal
Digital sounds can cut an analog sound wave which means that you can't get a perfect reproduction of a sound
Offers poor multi-user interfaces