Frekvenssimodulering
Frekvensmodulering, commonly abbreviated as FM, is a method of encoding information onto a carrier wave by modulating its frequency. In this process, the instantaneous frequency of the carrier wave is varied in proportion to the instantaneous amplitude of the message signal. This stands in contrast to amplitude modulation (AM), where the amplitude of the carrier wave is varied while its frequency remains constant.
FM offers several advantages over AM, notably its superior immunity to noise. External electrical disturbances, such
The mathematical representation of an FM signal involves a carrier wave with a constant amplitude and a
FM is widely used in radio broadcasting, specifically for the FM radio band (88-108 MHz in most