Analog and Digital Communication

Frequency modulation (FM) is a modulation technique that varies the frequency of a carrier signal based on the message signal. FM is commonly used for broadcasting music and speech due to its resilience to noise and interference. It has advantages over AM such as better fidelity and the ability to use non-linear power amplifiers, though it requires more bandwidth. Applications of FM include radio broadcasting, two-way communications, telemetry, and magnetic tape recording.