Final answer:
AM stands for Amplitude Modulation. Simple AM transmits the entire audio signal, resulting in a wide frequency spectrum. Standard AM transmits the audio signal only in one direction, resulting in a narrower frequency spectrum.
Step-by-step explanation:
AM stands for Amplitude Modulation, while Standard AM refers to the conventional way of transmitting radio signals using AM.
In Simple AM, also known as Double-Sideband AM, the entire audio signal is transmitted, including both the positive and negative halves of the signal. This results in a wide frequency spectrum and requires a larger bandwidth.
In Standard AM, also known as Amplitude Modulation with Carrier, the audio signal is shifted and transmitted only in one direction, resulting in a narrower frequency spectrum and requiring less bandwidth.