Amplitude Modulation, or AM, works by modulating the sound on the &quot;peaks and valleys&quot; of the frequency. If you were to look at the waveform of the carrier frequency, you would see it as variance in the &quot;power levels&quot; of the signal, going higher and lower depending on what&#x27;s being sent.<p>Because of how AM works, you can actually hear what&#x27;s being transmitted by causing an electrical arc. It&#x27;s the same concept of hearing a &quot;buzz&quot; from high voltage power lines, except in a controlled fashion to produce sound.﻿