Amplitude modulation is a modulation conversion technique that is used mainly for the communication of data over the carrier wave. In this type of modulation the amplitude is varied in corresponding to the wave being transmitted into the carrier.

There is a variation regarding the amplitude and the wave for doing data transmission in the analog form.

The wave is similar like a sound that we have a loudspeaker,or the television sound we have in our home.

This kind of technique with the frequency modulation,in which the frequency is changed and the phase modulation where phase of the carrier is changed.

Amplitude modulation is being implemented by using the multiplier. The amplitude we used is multiplied by the carrier frequency then the analog data is produced.

The frequency and phase of carrier signal remain unchanged.