Which modulation method is commonly used in FM radio broadcasting?

Frequency Modulation (FM) is the modulation method commonly used in FM radio broadcasting due to its ability to provide better sound quality and reduced susceptibility to noise compared to other modulation methods. In FM, the frequency of the carrier wave is varied in accordance with the amplitude of the audio signal being transmitted. This results in more robust signal transmission, especially in the presence of interference and signal fading.

FM broadcasting benefits from the wide bandwidth it occupies, allowing for higher fidelity audio reproduction and stereo broadcasting capabilities, which are essential for music and voice clarity. Furthermore, FM's inherent characteristics help minimize distortion and maintain sound quality even when signal strength varies, making it the preferred choice for commercial radio broadcasting.

The other modulation methods mentioned, like Amplitude Modulation (AM), are used for different applications and have distinct characteristics that make them less suitable for the specific needs of FM broadcasting.