Amplitude modulation uses two ________ levels.
A)loudness
B)frequency
C)both A and B

Question

Quizplus · Accepted Answer

Amplitude modulation (AM) uses two different loudness levels, typically referred to as the "carrier" and the "modulating" signal. The carrier signal is a high-frequency wave that is constant in amplitude and represents the baseline for the transmitted signal. The modulating signal is a lower frequency wave that varies in amplitude and is used to convey information (such as sound) on top of the carrier wave. Thus, AM is a type of modulation that varies the amplitude (or "loudness") of the carrier wave to encode the modulating signal.

Amplitude Modulation Uses Two ________ Levels