Frequency Modulation

FM is the acronym for Frequency Modulation.

A modulation technique is commonly used in telecommunications and broadcasting, particularly radio transmissions. In FM, the frequency of a carrier signal is varied in proportion to the amplitude of a modulating signal—this modulation process results in transmitting audio or data signals over a radio frequency carrier wave. Key points about FM:

  • Signal Quality: FM is known for its high signal quality and resistance to amplitude variations and noise. This makes it suitable for broadcasting music and voice with clear and consistent sound.
  • Applications: FM is widely used in radio broadcasting, two-way radio communication systems (like walkie-talkies), and specific radar systems.
  • Frequency Deviation: The amplitude of the modulating signal (e.g., audio) determines the extent to which the carrier frequency is deviated. This is typically measured in Hertz (Hz).
  • Demodulation: To retrieve the original modulating signal from an FM signal, a receiver uses a demodulation process, often involving a phase-locked loop (PLL) circuit.

In the context of sales, marketing, and online technology, understanding FM modulation might be relevant if you are dealing with the transmission of audio content over radio or other communication channels, as it can impact the quality and reach of your marketing messages or advertisements when using FM-based broadcasting.

  • Abbreviation: FM

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