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what is AM and FM AM normally refers to Amplitude Modulation while FM refers to Frequency Modulation. As the names suggest, in AM, the carrier wave is modulated by the amplitude of the input signal/waveform while in FM, it is based on the frequency. For further information on how exactly it's done, just run a search for Amplitude Modulation / Frequency Modulation and you should be able to find more detailed information about them.

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16y ago

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