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Number of occurrences or cycles per unit time
Frequency is the number of occurrences of a repeating event per unit of time. Frequency is an important parameter used in science and engineering to specify
Frequency
How often each letter appears in written language
Letter frequency is the number of times letters of the alphabet appear on average in written language. Letter frequency analysis dates back to the Arab
Letter_frequency
2001 video game
Frequency (usually stylized as FreQuency) is a rhythm video game developed by Harmonix and published by Sony Computer Entertainment for the PlayStation
Frequency_(video_game)
Topics referred to by the same term
Smith Frequency (Nick Gilder album), 1979 Frequency (Frequency album), 2006 Frequency (IQ album), 2009 Frequency (EP), a 2024 EP by WayV "Frequency" (song)
Frequency_(disambiguation)
networks, operate in two different frequency bands. Frequency Range 1 (FR1) originally includes sub-6 GHz frequency bands, some of which are traditionally
5G_NR_frequency_bands
Electromagnetic frequencies ranging from 3 kHz to 300 GHz
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical
Radio_frequency
Kind of cognitive bias
The frequency illusion (also known as the Baader–Meinhof phenomenon or Red Car Theory) is a cognitive bias in which a person notices a specific concept
Frequency_illusion
Electronic method of transmitting information with a carrier wave
Frequency modulation (FM) is a signal modulation technique used in electronic communication, originally for transmitting messages with a radio wave. In
Frequency_modulation
Physical characteristic of oscillating systems
force or vibration whose frequency matches a resonant frequency (or resonance frequency) of the system, defined as a frequency that generates a maximum
Resonance
Electromagnetic spectrum 300–3000 MHz
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the
Ultra_high_frequency
Audio frequencies used for the transmission of speech
voice frequency (VF) or voice band is the range of audio frequencies used for the transmission of speech. In telephony, the usable voice frequency band
Voice_frequency
3–30 MHz range of the electromagnetic spectrum
High frequency (HF) is the ITU designation for the band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter
High_frequency
Sound whose frequency is audible to the average human
An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz
Audio_frequency
Radio signal transmission method
Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many frequencies occupying
Frequency-hopping spread spectrum
Frequency-hopping_spread_spectrum
Lowest frequency of a periodic waveform, such as sound
The fundamental frequency, often referred to simply as the fundamental (abbreviated as f0 or f1), is defined as the lowest frequency of a periodic waveform
Fundamental_frequency
Electronic system for generating any of a range of frequencies
A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used
Frequency_synthesizer
Electromagnetic wave range of 30–300 MHz
one meter. Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high frequency (UHF). VHF
Very_high_frequency
Maximum frequency of non-aliased component upon sampling
In signal processing, the Nyquist frequency (or folding frequency) is a characteristic of a sampler, which converts a continuous function or signal into
Nyquist_frequency
Rate of change of angle
In physics, angular frequency (symbol ω), also called angular speed and angular rate, is a scalar measure of the angle rate (the angle per unit time)
Angular_frequency
Radar technology
Frequency agility is the ability of a radar system to quickly shift its operating frequency to account for atmospheric effects, jamming, mutual interference
Frequency_agility
Signal representation used in automatic speech recognition
In sound processing, the mel-frequency cepstrum (MFC) is a representation of the short-term power spectrum of a sound, based on a linear cosine transform
Mel-frequency_cepstrum
Range of frequencies or wavelengths of electromagnetic radiation
spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different
Electromagnetic_spectrum
Physics calculation for collisions
Collision frequency describes the rate of collisions between two atomic or molecular species in a given volume, per unit time. In an ideal gas, assuming
Collision_frequency
Band-limited audio for 3–120 Hz range
The low-frequency effects (LFE) channel is a band-limited audio track that is used for reproducing deep and intense low-frequency sounds in the 3–120
Low-frequency_effects
Concept in radio transmission
of a frequency modulated signal, and the nominal center or carrier frequency. The term is sometimes mistakenly used as synonymous with frequency drift
Frequency_deviation
Circuit that creates new frequencies from two signals
In electronics, a mixer or frequency mixer is a circuit that outputs signals with new frequencies from two signals input to it. In its most common application
Frequency_mixer
telecommunications, the term critical frequency has the following meanings: In radio propagation by way of the ionosphere, the frequency at or below which a wave component
Critical_frequency
Frequency in atomic physics
The Rabi frequency Ω {\displaystyle \Omega } is the frequency at which the probability amplitudes of two atomic energy levels fluctuate in an oscillating
Rabi_frequency
standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of frequency channels numbered at 5 MHz spacing
List_of_WLAN_channels
Circuit
A frequency divider, also called a clock divider or scaler or prescaler, is a circuit that takes an input signal of a frequency, f i n {\displaystyle
Frequency_divider
1994 single by R.E.M.
"What's the Frequency, Kenneth?" is a song by American alternative rock band R.E.M. from their ninth studio album, Monster (1994). The song's title refers
What's the Frequency, Kenneth?
What's_the_Frequency,_Kenneth?
2000 film by Gregory Hoblit
Frequency is a 2000 American science fiction thriller film starring Dennis Quaid, Jim Caviezel, Andre Braugher, Elizabeth Mitchell, Shawn Doyle, Melissa
Frequency_(2000_film)
Process of mitigating interference between communications services
Frequency Coordination is a technical and regulatory process that removes or mitigates radio-frequency interference between different radio systems that
Frequency_coordination
Output as a function of input frequency
frequency response of a system is the quantitative measure of the magnitude and phase of the output as a function of input frequency. The frequency response
Frequency_response
Type of algorithmic trading
High-frequency trading (HFT) is a type of algorithmic automated trading system in finance characterized by high speeds, high turnover rates, and high
High-frequency_trading
International Telecommunication Union-approved frequency bands for GSM
GSM frequency bands or frequency ranges are the cellular frequencies designated by the ITU for the operation of GSM mobile phones and other mobile devices
GSM_frequency_bands
time–frequency representation (TFR) is a view of a signal (taken to be a function of time) represented over both time and frequency. Time–frequency analysis
Time–frequency_representation
Frequency at which systems tend to oscillate
Natural frequency, measured in terms of eigenfrequency, is the rate at which an oscillatory system tends to oscillate in the absence of disturbance. A
Natural_frequency
Intermediate-frequency (IF) amplifiers are amplifier stages used to raise signal levels in radio and television receivers, at frequencies intermediate
Intermediate-frequency amplifier
Intermediate-frequency_amplifier
Radio transmission of audio by frequency modulation
FM broadcasting is a radio broadcasting method that uses frequency modulation (FM) transmissions. In November 1919, Hans Idzerda began broadcasts, using
FM_broadcasting
Topics referred to by the same term
the term frequency shift may refer to: Any change in frequency A Doppler shift In facsimile, a frequency modulation system where one frequency represents
Frequency_shift
In telecommunications, the term frequency averaging has the following meanings: The process by which the relative phases of precision clocks are compared
Frequency_averaging
Allocation and regulation of the electromagnetic spectrum into radio frequency bands
Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum
Frequency_allocation
Type of adjustable-speed drive
A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable
Variable-frequency_drive
Laser source with equal intervals of spectral lines
A frequency comb or spectral comb is represented by a spectrum made of discrete, stable and regularly spaced spectral lines. In optics, a frequency comb
Frequency_comb
Diagrams representing dispersion in atmospheric waves
wavenumber–frequency diagram is a plot displaying the relationship between the wavenumber (spatial frequency) and the frequency (temporal frequency) of certain
Wavenumber–frequency_diagram
300–3000 kHz range of the electromagnetic spectrum
Medium frequency (MF) is the ITU designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is
Medium_frequency
Frequency response boundary
electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing
Cutoff_frequency
Techniques and methods in signal processing
time–frequency analysis comprises those techniques that study a signal in both the time and frequency domains simultaneously, using various time–frequency
Time–frequency_analysis
The word frequency effect is a psychological phenomenon where recognition times are faster for words seen more frequently than for words seen less frequently
Word_frequency_effect
Designation for a radio broadcasting frequency
broadcasting, a channel or frequency channel is a designated radio frequency (or, equivalently, wavelength), assigned by a competent frequency assignment authority
Channel_(broadcasting)
Independent rock band from Los Angeles
The Frequency was an independent rock band from Los Angeles, CA. Marc Cazorla and Alex Stiff, later of The Record Company, were the core songwriting and
The_Frequency
Number of occurrences in an experiment or study
In statistics, the frequency or absolute frequency of an event i {\displaystyle i} is the number n i {\displaystyle n_{i}} of times the observation has
Frequency_(statistics)
2023 video game
Killer Frequency is a 2023 first-person horror-adventure game developed and published by Team17. The game takes place in a small town in 1987, where players
Killer_Frequency
This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone
Piano_key_frequencies
Frequency bands used by Long Term Evolution networks
Long-Term Evolution (LTE) telecommunications networks use several frequency bands with associated bandwidths. From Tables 5.5-1 "E-UTRA Operating Bands"
LTE_frequency_bands
Estimate of the importance of a word in a document
In information retrieval, tf–idf (term frequency–inverse document frequency, TF*IDF, TFIDF, TF–IDF, or Tf–idf) is a measure of importance of a word to
Tf–idf
Canadian-American feminist media critic (born 1983)
Canadian-American feminist media critic. She is the founder of Feminist Frequency, a website that hosts videos and commentary analyzing portrayals of women
Anita_Sarkeesian
quantified by the frequency of alleles. Two fundamental calculations are central to population genetics: allele frequencies and genotype frequencies. Genotype
Genotype_frequency
Data communications modulation protocol
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is encoded on a carrier signal by periodically shifting the
Frequency-shift_keying
electromagnetic induction, see induction heating Radio-frequency induction (RF induction) is the use of a radio frequency magnetic field to transfer energy by means
Radio-frequency_induction
Relative frequency of a variant of a gene at a particular locus in a population
Allele frequency, or gene frequency, is the relative frequency of an allele (variant of a gene) at a particular locus in a population, expressed as a
Allele_frequency
Frequency to which a carrier wave is shifted during transmission or reception
intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is
Intermediate_frequency
Rate at which a threshold is exceeded
The frequency of exceedance, sometimes called the annual rate of exceedance, is the frequency with which a random process exceeds some critical value
Frequency_of_exceedance
The letter frequency effect is an effect of letter frequency, according to which the frequency with which the letter is encountered influences the recognition
Letter_frequency_effect
Number of pulses of a repeating signal
The pulse-repetition frequency (PRF) is the number of pulses of a repeating signal in a specific time unit. The term is used within a number of technical
Pulse-repetition_frequency
Electromagnetic spectrum, 3 Hz – 3000 GHz
the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely
Radio_spectrum
Number of rotations per unit time
Rotational frequency, also known as rotational speed or rate of rotation (symbols ν, lowercase Greek nu, and also n), is the frequency of rotation of
Rotational_frequency
3-30 Hz range of the electromagnetic spectrum
Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths
Extremely_low_frequency
Type of electromagnetic radiation
radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically with frequencies below 300 gigahertz (GHz)
Radio_wave
Measure of fluid stability against vertical displacement
oceanography, asteroseismology and geophysics, the Brunt–Väisälä frequency, or buoyancy frequency, is a measure of the stability of a fluid to vertical displacements
Brunt–Väisälä_frequency
Part of a spectrum
g., noise spectrum. A frequency band is an interval in the frequency domain, limited by a lower frequency and an upper frequency. For example, it may refer
Spectral_band
Study of the frequency of letters or groups of letters in a ciphertext
In cryptanalysis, frequency analysis (also known as counting letters) is the study of the frequency of letters or groups of letters in a ciphertext. The
Frequency_analysis
30–300 kHz range of the electromagnetic spectrum
Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively
Low_frequency
Ultra high frequency radio bands assigned to mobile devices
Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular-compatible mobile devices
Cellular_frequencies
Vibrations with frequencies lower than 20 hertz
Infrasound, sometimes referred to as low frequency sound or (sometimes ambigously) subsonic (subsonic being a descriptor for "less than the speed of sound")
Infrasound
Electronic measuring instrument
A frequency counter is an electronic instrument, or component of one, that is used for measuring frequency. Frequency counters usually measure the number
Frequency_counter
aviation, a single frequency approach (SFA) is a service for a military single-piloted turbojet aircraft to use a single UHF frequency during their landing
Single_frequency_approach
Characteristic of any structure that is periodic across a position in space
engineering, spatial frequency is a characteristic of any structure that is periodic across position in space. The spatial frequency is a measure of how
Spatial_frequency
Disturbance in an electrical circuit due to external sources of radio waves
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external
Electromagnetic_interference
Frequency used on standard electricity grid in a given area
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating
Utility_frequency
Range of frequencies that can be heard by humans or other animals
Hearing range describes the frequency range that can be heard by humans or other animals, though it can also refer to the range of levels. The human range
Hearing_range
Emergency aeronautical frequency
The aircraft emergency frequency (also known in the USA as Guard) is a frequency used on the aircraft band reserved for emergency communications for aircraft
Aircraft_emergency_frequency
Telecommunications networks transmitted by radio waves
transceiver, the terrain, and the frequency band being used. A cell typically uses a different set of frequencies from neighboring cells, to avoid interference
Cellular_network
Telecommunication signaling system
Dual-tone multi-frequency (DTMF) signaling is a telecommunication signaling system using the voice-frequency band over telephone lines between telephone
DTMF_signaling
Reserved part of radio spectrum
Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union (ITU) oversees
Amateur radio frequency allocations
Amateur_radio_frequency_allocations
Meter that displays the frequencies of an electronic signal
A frequency meter is an instrument that displays the frequency of a periodic electrical signal. Various types of mechanical frequency meters were used
Frequency_meter
30–300 GHz range of the electromagnetic spectrum
Extremely high frequency (EHF) is the electromagnetic band from 30 to 300 gigahertz (GHz), as designated by the International Telecommunication Union
Extremely_high_frequency
Topics referred to by the same term
Transition frequency may refer to: A measure of the high-frequency operating characteristics of a transistor, usually symbolized as fT A characteristic
Transition_frequency
Electrical resonant transformer circuit invented by Nikola Tesla
Tesla in 1891. It is used to produce high voltage, low current, high frequency alternating current. Tesla experimented with a number of different configurations
Tesla_coil
Number of times an audience is exposed to advertisement
In marketing and advertising, frequency refers to the number of times a target audience is exposed to a particular message or advertisement within a given
Frequency_(marketing)
Nonlinear optical process
Sum-frequency generation (SFG) is a second order nonlinear optical process based on the mixing of two input photons at frequencies ω 1 {\displaystyle \omega
Sum-frequency_generation
Electronic circuit
In electronics, a frequency multiplier is an electronic circuit that generates an output signal which has a frequency that is a harmonic (multiple) of
Frequency_multiplier
Represents an analog signal using only two levels
Pulse-frequency modulation (PFM) is a modulation method for representing an analog signal using only two levels (1 and 0). It is analogous to pulse-width
Pulse-frequency_modulation
Signal representation
frequency-domain graph shows how the signal is distributed within different frequency bands over a range of frequencies. A complex valued frequency-domain
Frequency_domain
Chinese character frequency (simplified Chinese: 汉字字频; traditional Chinese: 漢字字頻; pinyin: hànzì zì pín) is the applicational frequency of characters in
Chinese_character_frequency
Belgian DJ (born 1993)
Felix De Laet (born 30 November 1993), known by his stage name Lost Frequencies, is a Belgian DJ and record producer. He is best known for his singles
Lost_Frequencies
Radio frequency authorization
given by a frequency administration for a radio station to use a radio frequency or radio frequency channel under specified conditions". Frequency assignment
Frequency_assignment
Manner in which humans engage sexually
sex, etc.) or multiple persons (e.g., orgies) in varying patterns of frequency, for a wide variety of reasons. Sexual activity usually results in sexual
Human_sexual_activity
In telegraphy, frequency-exchange signaling or two-source frequency keying is frequency-change signaling in which the change from one significant condition
Frequency-exchange_signaling
FREQUENCY
FREQUENCY
Surname or Lastname
English and Scottish
English and Scottish : from a Celtic personal name of great antiquity and obscurity. In England the personal name is now usually spelled Alan, the surname Allen; in Scotland the surname is more often Allan. Various suggestions have been put forward regarding its origin; the most plausible is that it originally meant ‘little rock’. Compare Gaelic ailÃn, diminutive of ail ‘rock’. The present-day frequency of the surname Allen in England and Ireland is partly accounted for by the popularity of the personal name among Breton followers of William the Conqueror, by whom it was imported first to Britain and then to Ireland. St. Alan(us) was a 5th-century bishop of Quimper, who was a cult figure in medieval Brittany. Another St. Al(l)an was a Cornish or Breton saint of the 6th century, to whom a church in Cornwall is dedicated.This name was brought to North America from different parts of the British Isles independently by many bearers in the 17th and 18th centuries. Prominent early bearers include Samuel Allen, who settled in Braintree, MA, about 1629 (died 1648 in Windsor, CT) and whose descendants included Ethan Allen (1737–89), leader of the Green Mountain Boys in VT during the Revolution; and William Allen (died 1725), from Dungannon, Ireland, an early Presbyterian settler in Philadelphia, whose descendants include William Allen (1803–79), governor of OH.
Surname or Lastname
English
English : from Old English Englisc. The word had originally distinguished Angles (see Engel) from Saxons and other Germanic peoples in the British Isles, but by the time surnames were being acquired it no longer had this meaning. Its frequency as an English surname is somewhat surprising. It may have been commonly used in the early Middle Ages as a distinguishing epithet for an Anglo-Saxon in areas where the culture was not predominantly English--for example the Danelaw area, Scotland, and parts of Wales--or as a distinguishing name after 1066 for a non-Norman in the regions of most intensive Norman settlement. However, explicit evidence for these assumptions is lacking, and at the present day the surname is fairly evenly distributed throughout the country.Irish : see Golightly.
Surname or Lastname
English, French, Spanish, Portuguese, German, Polish, Czech, Slovak, Hungarian (Dániel), Romanian, and Jewish
English, French, Spanish, Portuguese, German, Polish, Czech, Slovak, Hungarian (Dániel), Romanian, and Jewish : from the Hebrew personal name Daniel ‘God is my judge’, borne by a major prophet in the Bible. The major factor influencing the popularity of the personal name (and hence the frequency of the surname) was undoubtedly the dramatic story in the Book of Daniel, recounting the prophet’s steadfast adherence to his religious faith in spite of pressure and persecution from the Mesopotamian kings in whose court he served: Nebuchadnezzar and Belshazzar (at whose feast Daniel interpreted the mysterious message of doom that appeared on the wall, being thrown to the lions for his pains). The name was also borne by a 2nd-century Christian martyr and by a 9th-century hermit, the legend of whose life was popular among Christians during the Middle Ages; these had a minor additional influence on the adoption of the Christian name. Among Orthodox Christians in Eastern Europe the name was also popular as being that of a 4th-century Persian martyr, who was venerated in the Orthodox Church.Irish : reduced form of McDaniel, which is actually a variant of McDonnell, from the Gaelic form of Irish Donal (equivalent to Scottish Donald), erroneously associated with the Biblical personal name Daniel. See also O’Donnell.Peter Daniel was one of the pioneer settlers in the 17th century in Stafford County, VA, where he was a justice of the peace. His grandson, Peter Vivian Daniel, was a U.S. Supreme Court justice from 1841 to his death in Richmond, VA, in 1860.
Surname or Lastname
English and Scottish
English and Scottish : habitational name, in part possibly from Lapley in Staffordshire, so named from Old English læppa ‘end of a parish’ + lēah ‘woodland clearing’, although the frequency of the surname in Scotland suggests another, unidentified source may also be involved.
FREQUENCY
FREQUENCY
Boy/Male
Indian, Punjabi, Sikh
Forster of Modesty
Boy/Male
Tamil
Heavenly
Girl/Female
Muslim/Islamic
Leader Head, Chief
Boy/Male
Muslim
Lack of difficulty
Boy/Male
Biblical
Murmuring.
Boy/Male
Hindu
Conquering enemies (Son of Krishna and Subhadra)
Boy/Male
Hindu
Home, Lord of all
Girl/Female
Arabic, Muslim
Beauty
Biblical
a live brother; my thorn or thistle
Male
Turkish
Turkish unisex name UMUT means "hope."
FREQUENCY
FREQUENCY
FREQUENCY
FREQUENCY
FREQUENCY
pl.
of Frequency
n.
The condition or quality of being general; frequency; commonness.
n.
An instrument for measuring sounds, as to their intensity, or the frequency of the vibrations.
n.
A crowd; a throng.
v. t.
To trouble greatly by numbers or by frequency of presence; to disturb; to annoy; to frequent and molest or harass; as, fleas infest dogs and cats; a sea infested with pirates.
n.
Frequency.
v. t.
To quote constantly or with great frequency.
n.
The condition of returning frequently; occurrence often repeated; common occurence; as, the frequency of crimes; the frequency of miracles.
n.
Frequency.
n.
A line connecting places on the earth's surface at which there is the same mean frequency of auroras.
a.
Having the sensibilities deadened by excess or frequency of enjoyment; sated or surfeited with pleasure; used up.
n.
The process of growing; the gradual increase of an animal or a vegetable body; the development from a seed, germ, or root, to full size or maturity; increase in size, number, frequency, strength, etc.; augmentation; advancement; production; prevalence or influence; as, the growth of trade; the growth of power; the growth of intemperance. Idle weeds are fast in growth.
n.
Frequency; abundance.
n.
Commonness; frequency.