A modulation method whereby the baseband signal varies the frequency of the carrier wave.

Transmission method in which the frequency of the carrier wave is changed to correspond to changes in the signal wave.

The signal carries the desired information by varying the frequency of the carrier wave.

Transmitting information (voice or music, for example) by modulating the instantaneous frequency of a carrier wave, causing it to depart from the center frequency by an amount proportional to the instantaneous value of the modulating signal that carries the information. In FM, the carrier frequency is also called the "center frequency."

Modulation of the radio frequency based on the frequency of signals (vs. the amplitude).

The process of changing only a carrier generator frequency with a modulation signal, the amplitude of the carrier is not changed.

Encoding of signals by changing the frequency of an alternating current. Often used, somewhat confusingly, to refer to “two-frequency recording”.

radio transmission method invented in 1935 to send information by modulating frequency instead of modulating amplitude of the signal. This made it possible to reduce size and improve quality of radio equipment

Frequency modulation (FM) is a method of impressing data onto an alternating-current (AC) wave by varying the instantaneous frequency of the wave.

a modulation technique that records changes in an information signal by modifying the frequency of the carrier signal according to changes in the amplitude of the information signal.

A system of impressing audio signals onto an RF carrier by causing them to make slight alterations in its frequency.

Cyclical variations in the frequency of a cylclical wave. See also amplitude modulation.

modulation of the frequency of the (radio) carrier wave

It's a type of modulation where the carrier's frequency is varied according to the amplitude variation of the baseband signal.

An analog modulation technique whereby the frequency of a carrier is varied to encode information.

FM. System for radio broadcasting invented by Edwin Armstrong that offers greater fidelity than AM. Operates in the MHz band.

The frequency of the radio frequency carrier is made to be proportional to the information signal.

A method of radio broadcasting in which the radio carrier frequency is frequency modulated by the audio signal. Capable of high sound quality, and relatively immune to interference and static. However, it propagates poorly over long distances and suffers from multipath interference and shadow zone problems in cities and hilly areas.

A change of the frequency of the carry wave to encode a communication signal.

(FM) A method of modulation in which the frequency of the carrier voltage is varied with the frequency of the modulation voltage (Also see Amplitude Modulation).

A modulation technique in which the carrier frequency is shifted by an amount proportional to the value of the modulating signal. The amplitude of the carrier signals remains constant. The deviation of the carrier frequency determines the signal content of the message.

Data is contained in the changes in the frequency of the carrier.

A communications transmission technique that modulates a data signal onto a fixed carrier by modifying the carrier frequency.

Technique by which a radio wave's frequency is varied (modulated) so it can carry a signal.

A method of altering a WAVEFORM by changing (or modulating) the signal's FREQUENCY. The best-known musical example is vibrato, which involves slight changes in frequency and level over time.

(FM). Modulation of a sine wave or carrier by varying its frequency in accordance with amplitude variations of the modulating signal.

A signaling method that varies the carrier frequency in proportion to the amplitude of the modulating signal.

A scheme for modulating a carrier frequency in which the amplitude remains constant but the carrier frequency is displaced in frequency proportionally to the amplitude of the modulating signal. An fm broadcast is practically immune to atmospheric and man-made interference.

is a variation in the frequency of a cycle over a longer cycle. For example, radio uses FM to transmit an audible sound of say 400 Hz by varying the frequency of a radio signal with frequency 100,000,000 Hz.

A means of adding voice or data to a radio frequency transmission by varying the carrier frequency. Broadcast stations in the 88-108 MHz "FM" band and television station sound channels use this modulation technique. FM is relatively insensitive to the static sources that AM is prone to.

A change in the frequency (pitch) of a signal. At low modulation rates, FM is perceived as vibrato or some type of trill, depending on the shape of the modulating waveform. When the modulating wave is in the audio range (above 20Hz or so), FM is perceived as a change in tone color. FM synthesizers, commonly found on computer soundcards, create sounds using audio-range frequency modulation.

A method of sending and distinguishing radio signals by modifying the frequency of the radio wave. See also AM.

A form of modulation that works by superimposing an information signal onto an RF carrier by varying the frequency of successive sine waves of the carrier.

Radio transmission covering 88-108 megahertz on the broadcast band. FM is less susceptible to interference than AM broadcasting, and is also used in other frequency bands for two-way communication in land and marine services.

A method of representing digital impulses on a communications link through changes of carrier frequency. Commonly used at speeds under 300 bps.

A technique whereby a carrier wave is made to carry information by changing its frequency in proportion to variations in strength of a lower frequency signal.

the modification of the frequency of a higher frequency, constant magnitude carrier signal controlled by the amplitude and phase of a lower frequency baseband or audio signal.

A type of modulation in which the frequency of a continuous radio carrier wave is varied in accordance with the properties of a second (modulating) wave.

a method of transmitting information on radio waves by encoding the information as a change in frequency or number of cycles per second.

A method of transmission in which the carrier frequency varies in accordance with the signal.

A form of modulation which represents information as variations in the instantaneous frequency of a carrier wave. Satellite carriers operating in the analog mode are usually frequency modulated. See also Amplitude Modulation.

A modulation technique involving computers in which the frequency of a signal is varied. See amplitude modulation.

Now the most common method of radio modulation in RC, FM is less prone to interference than AM. Information is transmitted by varying the frequency of the signal

The use of one control device to vary the frequency of another, e.g. Vibrato is the frequency modulation of a VCO by an LFO.

Use of various frequencies to convey an analogue or digital signal. With frequency modulation, the frequency of the carrier is varied according to the amplitude of the transmitted signal. FM radio is an example of frequency modulation. AM varies the amplitude of the signal while FM varies the frequency. See also VHF.

The encoding of a carrier wave by the modulation of its frequency. It produces little or no static and high fidelity reception. FM radio stations, from 88 to 108 megahertz produce reception superior to that of AM or amplitude modulation stations, particularly high-frequency sounds.

a method of modulation, where the strength of the signal is constant, but the frequency varies with the strength of the voice, and the rate of change varies with the frequency of the voice

A common method of radio or television broadcasting in which the frequency of the radio wave is changed above and below its central frequency. The changes in the frequency of the carrier wave, when detected, represent the information transmitted.

The process of varying the frequency of a carrier wave, usually with an audio frequency, in order to convey intelligence. Also called FM.

A common method of transmitting information over a carrier wave by changing its frequency.

Modifying the frequency of a fixed amplitude carrier signal in accordance with an informational signal so that it can carry data signals.

The radio band from 87.5MHz to 108.0MHz in Australia, with 0.2MHz intervals.# MY SONY MEMBERS

Changing the frequency of a carrier wave by some means so that the resultant waveform transmits a signal conveying information. For example, if the carrier wave with angular frequency ω is cos(ω), the corresponding frequency-modulated signal is where is a constant and . Frequency modulation is used in some continuous-wave radars to permit range determination, but it is not generally used in weather radars. Compare amplitude modulation.

Radio carrier wave frequency variation.

Angle modulation in which the modulating signal causes the carrier frequency to vary. The amplitude of the modulating signal determines how far the frequency changes, and the frequency of the modulating signal determines how fast the frequency changes.

Frequency modulation (FM) is a form of modulation which represents information as variations in the instantaneous frequency of a carrier wave. (Contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant.) In analog applications, the carrier frequency is varied in direct proportion to changes in the amplitude of an input signal.