Frequency Modulation (FM) is a technique used to encode information in a carrier wave by varying its frequency. This method is widely used in radio broadcasting, where audio signals are transmitted over the airwaves. FM is known for its resilience to noise and interference, making it a popular choice for high-fidelity audio transmission. In FM, the amplitude of the carrier wave remains constant while the frequency changes according to the input signal. This results in a clearer sound quality compared to Amplitude Modulation (AM). FM is also utilized in various applications, including television, two-way radios, and satellite communications.