What is modulation? Explain its need in communication
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Superimpos the low frequency singnal into high frequency singnals in called modulation ...
Vaishnavi18:
Explain its need in communication
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Modulation or modulation is the process of impersonating the low-frequency electro-magnetic waves on electrically-magnetic waves of high frequency.
The wavelengths imposed to the lower frequency are modulating waves, the waves of high frequency on which the waves of the lower frequency are imputed, the carrier wave carrier waves, and the resultant wave resulting from the modulation process is measured by the molten wave nodulated waves
The message signal in the communication body consists of audio frequency paras (20hrs to 20000 hrs). Before transmitting, they are converted into a electrical signal by the microphone.
Their frequency is also the same.
These waves can not be transmitted over a long distance
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