In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. (Compare with amplitude modulation, in which the amplitude of the carrier wave varies, while the frequency remains constant.) In analog signal applications, the difference betwe...
(FM), variation of the frequency of a carrier wave in accordance with the characteristics of a signal. See modulation.[9 related articles]
process by which the frequency of a carrier wave is varied according to a specified law NOTE - The result of this process is a frequency modulated signal.angle modulation in which the instantaneous frequency deviation varies in accordance with a given function, generally linear, of the instantaneous value of the modulating signal
Changing the carrier wave frequency according to changes in an information stream.
The interaction of two waves of different frequencies or simply the technique of changing a signal in some way.
Frequency modulation (FM) is a system of radio transmission in which the amplitude of the carrier remains constant but the frequency is varied in accordance with the amplitude of the modulating waveform. In frequency modulation the loudness of the applied audio-frequency modulation is represented by the amount of change of carrier frequency, and th...
The encoding of a carrier wave by variation of its frequency in accordance with an input signal.
Frequency modulation refers to the changing of the frequency of a radio-frequency or microwave frequency carrier wave. The other method of modulation is called amplitude modulation
[n] - modulation of the frequency of the (radio) carrier wave
The information signal is used to vary the carrier signal frequency. Signal-to-noise ratio may be increased over amplitude modulation without increasing power (though bandwidth will suffer). See also: Amplitude Modulation.
FM noun modulation of the frequency of the (radio) carrier wave
Variation of the frequency of a carrier wave in accordance with the signal to be transmitted. In FM the frequency of the carrier wave varies in accordance with the signal being transmitted. Its advantage over AM (amplitude modulation) is its better signal-to-noise ratio. It was invented by th...