 This allows any other signal to be tracked as just another change in amplitude . So it is possible for an AM receiver to demodulate several carriers at the same time, resulting in an audio mix.
<fluency>  This allows any other signal to be tracked as just another change in amplitude . So it is possible for an AM receiver to demodulate several carriers at the same time, resulting in an audio mix.
 This allows any other signal to be tracked as just another change in amplitude , so it is possible for an AM receiver to demodulate several carriers at the same time, resulting in an audio mix.