Modulation - Electronics Tutorials

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This is the process of adding information (music, data, etc) to a carrier signal.

The carrier can be

a radio wave
a beam of light
a beam of infra red
one or more high frequencies in a cable

The modulation can be analogue

AM (amplitude modulation)
FM (frequency modulation)

The modulation can be digital

PAM (pulse amplitude modulation)
PWM (pulse width modulation)
PPM (pulse position modulation)
PCM (pulse code modulation)

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