Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Frequency_modulation> ?p ?o }
- Frequency_modulation abstract "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. This contrasts with amplitude modulation, in which the amplitude of the carrier wave varies, while the frequency remains constant.In analog frequency modulation, such as FM radio broadcasting of an audio signal representing voice or music, the instantaneous frequency deviation, the difference between the frequency of the carrier and its center frequency, is proportional to the modulating signal.Digital data can be encoded and transmitted via FM by shifting the carrier's frequency among a predefined set of frequencies representing digits - for example one frequency can represent a binary 1 and a second can represent binary 0. This modulation technique is known as frequency-shift keying (FSK). FSK is widely used in modems and fax modems, and can also be used to send Morse code. Radioteletype also uses FSK.Frequency modulation is widely used for FM radio broadcasting. It is also used in telemetry, radar, seismic prospecting, and monitoring newborns for seizures via EEG, two-way radio systems, music synthesis, magnetic tape-recording systems and some video-transmission systems. In radio transmission, an advantage of frequency modulation is that it has a larger signal-to-noise ratio and therefore rejects radio frequency interference better than an equal power amplitude modulation (AM) signal. For this reason, most music is broadcast over FM radio.Frequency modulation has a close relationship with phase modulation; phase modulation is often used as an intermediate step to achieve frequency modulation. Mathematically both of these are considered a special case of quadrature amplitude modulation (QAM).".
- Frequency_modulation thumbnail Amfm3-en-de.gif?width=300.
- Frequency_modulation wikiPageID "10835".
- Frequency_modulation wikiPageLength "23380".
- Frequency_modulation wikiPageOutDegree "133".
- Frequency_modulation wikiPageRevisionID "699352821".
- Frequency_modulation wikiPageWikiLink Adjacent_channel.
- Frequency_modulation wikiPageWikiLink Amateur_radio.
- Frequency_modulation wikiPageWikiLink Amplitude.
- Frequency_modulation wikiPageWikiLink Amplitude_modulation.
- Frequency_modulation wikiPageWikiLink Analog_signal.
- Frequency_modulation wikiPageWikiLink Audio_frequency.
- Frequency_modulation wikiPageWikiLink BBC.
- Frequency_modulation wikiPageWikiLink Bandwidth_(signal_processing).
- Frequency_modulation wikiPageWikiLink Baseband.
- Frequency_modulation wikiPageWikiLink Bessel_function.
- Frequency_modulation wikiPageWikiLink Binary_number.
- Frequency_modulation wikiPageWikiLink Broadcasting.
- Frequency_modulation wikiPageWikiLink Capture_effect.
- Frequency_modulation wikiPageWikiLink Carrier_frequency.
- Frequency_modulation wikiPageWikiLink Carrier_wave.
- Frequency_modulation wikiPageWikiLink Category:Radio_modulation_modes.
- Frequency_modulation wikiPageWikiLink Chirp.
- Frequency_modulation wikiPageWikiLink Chirp_spread_spectrum.
- Frequency_modulation wikiPageWikiLink Chrominance.
- Frequency_modulation wikiPageWikiLink Class-D_amplifier.
- Frequency_modulation wikiPageWikiLink Constant_envelope.
- Frequency_modulation wikiPageWikiLink Continuous-wave_radar.
- Frequency_modulation wikiPageWikiLink Continuous_wave.
- Frequency_modulation wikiPageWikiLink Crystal_oscillator.
- Frequency_modulation wikiPageWikiLink Decibel.
- Frequency_modulation wikiPageWikiLink Detector_(radio).
- Frequency_modulation wikiPageWikiLink Digital_data.
- Frequency_modulation wikiPageWikiLink Drift_(telecommunication).
- Frequency_modulation wikiPageWikiLink Dynamic_range_compression.
- Frequency_modulation wikiPageWikiLink Edwin_Howard_Armstrong.
- Frequency_modulation wikiPageWikiLink Electroencephalography.
- Frequency_modulation wikiPageWikiLink Electromagnetic_interference.
- Frequency_modulation wikiPageWikiLink Equalization_(audio).
- Frequency_modulation wikiPageWikiLink FM-UWB.
- Frequency_modulation wikiPageWikiLink FM_broadcast_band.
- Frequency_modulation wikiPageWikiLink FM_broadcasting.
- Frequency_modulation wikiPageWikiLink Family_Radio_Service.
- Frequency_modulation wikiPageWikiLink Fax_modem.
- Frequency_modulation wikiPageWikiLink File:FM_Broadcast_Transmitter_High_Power.jpg.
- Frequency_modulation wikiPageWikiLink Foster–Seeley_discriminator.
- Frequency_modulation wikiPageWikiLink Fourier_analysis.
- Frequency_modulation wikiPageWikiLink Frequency-shift_keying.
- Frequency_modulation wikiPageWikiLink Frequency_deviation.
- Frequency_modulation wikiPageWikiLink Frequency_drift.
- Frequency_modulation wikiPageWikiLink Frequency_modulation_synthesis.
- Frequency_modulation wikiPageWikiLink Frequency_multiplier.
- Frequency_modulation wikiPageWikiLink Harmonic.
- Frequency_modulation wikiPageWikiLink Hertz.
- Frequency_modulation wikiPageWikiLink High_fidelity.
- Frequency_modulation wikiPageWikiLink History_of_radio.
- Frequency_modulation wikiPageWikiLink Infant.
- Frequency_modulation wikiPageWikiLink Information.
- Frequency_modulation wikiPageWikiLink Instantaneous_phase.
- Frequency_modulation wikiPageWikiLink Institute_of_Radio_Engineers.
- Frequency_modulation wikiPageWikiLink Interference_(communication).
- Frequency_modulation wikiPageWikiLink Intermediate_frequency.
- Frequency_modulation wikiPageWikiLink Linear_amplifier.
- Frequency_modulation wikiPageWikiLink Low-power_electronics.
- Frequency_modulation wikiPageWikiLink Luma_(video).
- Frequency_modulation wikiPageWikiLink Magnetic_tape.
- Frequency_modulation wikiPageWikiLink Modem.
- Frequency_modulation wikiPageWikiLink Modulation.
- Frequency_modulation wikiPageWikiLink Morse_code.
- Frequency_modulation wikiPageWikiLink Multiplexing.
- Frequency_modulation wikiPageWikiLink Noise_(radio).
- Frequency_modulation wikiPageWikiLink Noise_reduction.
- Frequency_modulation wikiPageWikiLink Personal_computer.
- Frequency_modulation wikiPageWikiLink Phase-locked_loop.
- Frequency_modulation wikiPageWikiLink Phase_modulation.
- Frequency_modulation wikiPageWikiLink Pre-echo.
- Frequency_modulation wikiPageWikiLink Print-through.
- Frequency_modulation wikiPageWikiLink Quadrature_amplitude_modulation.
- Frequency_modulation wikiPageWikiLink Radar.
- Frequency_modulation wikiPageWikiLink Radio.
- Frequency_modulation wikiPageWikiLink Radio_broadcasting.
- Frequency_modulation wikiPageWikiLink Radio_frequency.
- Frequency_modulation wikiPageWikiLink Radio_receiver.
- Frequency_modulation wikiPageWikiLink Radioteletype.
- Frequency_modulation wikiPageWikiLink Rule_of_thumb.
- Frequency_modulation wikiPageWikiLink Selectivity_(electronic).
- Frequency_modulation wikiPageWikiLink Sideband.
- Frequency_modulation wikiPageWikiLink Signal-to-noise_ratio.
- Frequency_modulation wikiPageWikiLink Signal_processing.
- Frequency_modulation wikiPageWikiLink Sine_wave.
- Frequency_modulation wikiPageWikiLink Sound_card.
- Frequency_modulation wikiPageWikiLink Spectral_density.
- Frequency_modulation wikiPageWikiLink Speech.
- Frequency_modulation wikiPageWikiLink Stereophonic_sound.
- Frequency_modulation wikiPageWikiLink Synthesizer.
- Frequency_modulation wikiPageWikiLink Tape_bias.
- Frequency_modulation wikiPageWikiLink Telecommunication.
- Frequency_modulation wikiPageWikiLink Telemetry.
- Frequency_modulation wikiPageWikiLink Time_base_correction.
- Frequency_modulation wikiPageWikiLink Tuner_(radio).