What kind of signals typically utilize amplitude modulation?

What kind of signals typically utilize amplitude modulation?

• A. Digital signals exclusively
• B. Unidirectional signals only
• C. Analog signals primarily
• D. Both digital and analog signals

Answer: (C)

Amplitude modulation (AM) is a technique primarily associated with analog signals. This method varies the amplitude of a carrier wave in accordance with the information signal, which is typically an audio or video signal that is analog in nature. The most familiar applications of AM include AM radio broadcasting, where the audio signal modulates the carrier wave to transmit sounds to listeners. Analog signals are continuous and can represent a range of values, making them well-suited for amplitude modulation, as the variation in amplitude can accurately mimic the contour of the original audio wave. While digital signals can employ modulation schemes, they often utilize techniques such as frequency shift keying (FSK) or phase shift keying (PSK) instead of amplitude modulation, as the requirements and characteristics of digital communication differ from those of analog signals. Thus, the primary utilization of amplitude modulation is found in analog signal transmission, affirming that option selection is focused on the nature of the signals most relevant to AM technology.

Amplitude modulation (AM) is a technique primarily associated with analog signals. This method varies the amplitude of a carrier wave in accordance with the information signal, which is typically an audio or video signal that is analog in nature. The most familiar applications of AM include AM radio broadcasting, where the audio signal modulates the carrier wave to transmit sounds to listeners.

Analog signals are continuous and can represent a range of values, making them well-suited for amplitude modulation, as the variation in amplitude can accurately mimic the contour of the original audio wave. While digital signals can employ modulation schemes, they often utilize techniques such as frequency shift keying (FSK) or phase shift keying (PSK) instead of amplitude modulation, as the requirements and characteristics of digital communication differ from those of analog signals.

Thus, the primary utilization of amplitude modulation is found in analog signal transmission, affirming that option selection is focused on the nature of the signals most relevant to AM technology.