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What is FREQUENCY MODULATION? FREQUENCY MODULATION meaning and Use for Amateurs
In this video, viewers will learn what Frequency Modulation is.
At the end of this video, viewers will learn how Frequency Modulation is related to all Amateur activities.
What is Frequency Modulation?
Frequency modulation is a technique or a process of encoding information on a particular signal (analogue or digital) by varying the carrier wave frequency in accordance with the frequency of the modulating signal. As we know, a modulating signal is nothing but information or message that has to be transmitted after being converted into an electronic signal.
Much like in amplitude modulation, frequency modulation also has a similar approach where a carrier signal is modulated by the input signal. However, in the case of FM, the amplitude of the modulated signal is kept or it remains constant.
If we talk about the applications of frequency modulation, it is mostly used in radio broadcasting. It offers a great advantage in radio transmission as it has a larger signal-to-noise ratio. Meaning, it results in low radio frequency interference. This is the main reason that many radio stations use FM to broadcast music over the radio.
Additionally, some of its uses are also found in radar, telemetry, seismic prospecting and in EEG, different radio systems, music synthesis as well as in video-transmission instruments.
Source: IIT JEE Study Materials:https://creativecommons.org/licenses/...
Many thanks to "The Audiopedia".
License:
Creative Commons Attribution license (reuse allowed)
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