In a communication system, what is meant by modulation? State any two types of modulation.

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2 Answers

The process in which a low frequency signal is superimposed on a high frequency wave, which acts as a carrier wave, is called modulation.

Two types of modulation:

(i) Amplitude Modulation (AM)

(ii) Frequency Modulation (FM)

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Modulation is the superimposition of a low frequency signal over a high frequency signal. 

(i) Amplitude modulation 

(ii) Frequency modulation

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