Amplitude Modulation
Amplitude Modulation (AM) is a technique used in broadcasting audio signals, such as radio. It works by varying the strength (amplitude) of a carrier wave to encode information, such as music or voice. In AM, the audio signal modifies the height of the wave, while the frequency remains constant. This allows the audio information to be transmitted over long distances. AM radio stations can be received by standard radios, making it a popular choice for news and music broadcasts, although it can be more susceptible to interference compared to other methods like Frequency Modulation (FM).
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Amplitude modulation (AM) is a method used to encode information in a carrier wave by varying its amplitude, or strength. In radio broadcasting, for example, a sound signal (like voice or music) changes the amplitude of a higher frequency wave, which then transmits the sound over long distances. When you tune in to an AM radio station, your radio demodulates the signal to recover the original sound. AM can cover wide areas but is more susceptible to interference than other methods like frequency modulation (FM), which alters the frequency of the wave instead.