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Level of noise power introduced by a component or source
In electronics, noise temperature is one way of expressing the level of available noise power introduced by a component or source. The power spectral
Noise_temperature
such as radio, radar and telecommunications, noise temperature of an antenna is a measure of the noise power density contributed by the antenna to the
Noise_temperature_(antenna)
Measure of antenna performance
equivalent noise temperature of the receiving system in kelvins. The receiving system noise temperature is the summation of the antenna noise temperature and
Antenna gain-to-noise-temperature
Antenna_gain-to-noise-temperature
Electrical noise due to thermal vibration within a conductor
cooled to cryogenic temperatures to improve their signal-to-noise ratio. The generic, statistical physical derivation of this noise is called the fluctuation-dissipation
Johnson–Nyquist_noise
Method for reducing unwanted sound
Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition
Active_noise_control
Telecommunication formula by Harald T. Friis
calculate the signal-to-noise ratio of a multistage amplifier. One relates to noise factor while the other relates to noise temperature. Friis's formula is
Friis_formulas_for_noise
Number used to evaluate the performance of an amplifier
input termination at standard noise temperature T0 (usually 290 K). The noise factor is thus the ratio of actual output noise to that which would remain
Noise_figure
SI unit of temperature
to an ultimate noise floor, i.e. the noise temperature. The Johnson–Nyquist noise of resistors (which produces an associated kTC noise when combined with
Kelvin
effective input noise temperature is the source noise temperature in a two-port network or amplifier that will result in the same output noise power, when
Effective input noise temperature
Effective_input_noise_temperature
Noise-equivalent temperature (NET) is a measure of the sensitivity of a detector of thermal radiation in the infrared, terahertz or microwave portions
Noise-equivalent_temperature
In signal processing, unwanted modifications to a signal
Relative intensity noise, in a laser beam Antenna noise temperature, measure of noise in telecommunications antenna Received noise power, noise at a telecommunications
Noise_(signal_processing)
Method for determining noise temperature
the gain and noise temperature of an amplifier. It is based on the Johnson–Nyquist noise of a resistor at two different, known temperatures. Consider a
Y-factor
Receiving device on satellite dishes
expressed as the noise figure (or sometimes noise temperature). This is the signal-to-noise ratio at the input divided by the signal-to-noise ratio at the
Low-noise_block_downconverter
Exterior structure on infrastructure used to prevent loud sounds from escaping
A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants
Noise_barrier
Study and modification of the noise and vibration characteristics of vehicles
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics
Noise, vibration, and harshness
Noise,_vibration,_and_harshness
Type of electronic noise
Shot noise or Poisson noise is a type of noise which can be modeled by a Poisson process. In electronics, shot noise originates from the discrete nature
Shot_noise
Process of removing noise from a signal
Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort
Noise_reduction
Methods to reduce sound pressure
absorption, or using active anti-noise sound generators. Acoustic quieting and noise control can be used to limit unwanted noise. Soundproofing can reduce the
Soundproofing
Strategies to reduce noise pollution or its impact
Noise control or noise mitigation is a set of strategies to reduce noise pollution or to reduce the impact of that noise, whether outdoors or indoors.
Noise_control
Excessive displeasing noise
Noise pollution, is the propagation of noise or sound with potential harmful effects on humans and animals. The main sources of outdoor noise worldwide
Noise_pollution
Device generating calibrated broadband noise for RF and microwave measurements
thermal noise floor at the standard reference temperature of 290 K. Commercial noise sources for noise figure measurement typically take the form of a
Radio_noise_source
Topics referred to by the same term
"having a temperature", the elevation of the body temperature Noise temperature, a measure of the noise of an electronic component Temperature (softmax
Temperature_(disambiguation)
Noise power per unit of bandwidth
T is the receiver system noise temperature in kelvins. The noise amplitude spectral density is the square root of the noise power spectral density, and
Noise_spectral_density
Types of noise
given location Noise power, with several related meanings Noise spectral density, No measured in Watt/Hertz Noise temperature, temperature that would produce
Noise_(spectral_phenomenon)
power Noise figure Noise floor Noise gate Noise generator Noise level Noise measurement Noise power Noise print Noise shaping Noise temperature Noise wall
List_of_noise_topics
Topics referred to by the same term
Antenna temperature may refer to: Antenna noise temperature Antenna gain-to-noise-temperature This disambiguation page lists articles associated with
Antenna_temperature
Physical quantity of hot and cold
indicates that the noise-power is directly proportional to the temperature of the resistor and to the value of its resistance and to the noise bandwidth. In
Temperature
Signal-to-noise ratio of a modulated signal
joules per kelvin) and the noise temperature T (in kelvins). In the quotient between carrier power (in watts, W) and noise density (in W/Hz), the two
Carrier-to-noise_ratio
Logarithmic unit expressing the ratio of physical quantities
international circuits. dBK dB(K) – decibels relative to 1 K; used to express noise temperature. dBK−1 or dB/K dB(K−1) – decibels relative to 1 K−1. — not decibels
Decibel
standard noise temperature (290 K), so k T 0 = 4.00 × 10 − 21 [ W s ] {\displaystyle kT_{0}=4.00\times 10^{-21}\,[Ws]} . Note: The equivalent noise resistance
Equivalent_noise_resistance
Health consequences of exposure to elevated sound levels
Noise health effects are the physical and psychological health consequences of regular exposure to consistent elevated sound levels. Noise from traffic
Health_effects_from_noise
Noise removal process during image processing
known as total variation regularization or total variation filtering, is a noise removal process (filter). It is based on the principle that signals with
Total_variation_denoising
Noise control by legal regulation of noise-producing items
States Noise Control Act of 1972, other local and state governments passed further regulations. A noise regulation restricts the amount of noise, the duration
Noise_regulation
Non-linear digital filtering technique to remove noise
digital filtering technique, often used to remove noise from an image, signal, and video. Such noise reduction is a typical pre-processing step to improve
Median_filter
Communications satellite launchedin 2006
AMC-18 is a geostationary Lockheed Martin A2100A communications satellite owned by SES Americom. It was launched on 8 December 2006 from Centre Spatial
AMC-18
Damping unwanted vibrations of machinery
that the reception of noise by the observer is minimized. Acoustic quieting might consider: Noise generation: by limiting the noise at its source, Sympathetic
Acoustic_quieting
Temperature range in which the equipment is expected to function reliably
An operating temperature is the allowable temperature range of the local ambient environment at which an electrical or mechanical device operates. The
Operating_temperature
Circuit that produces electrical noise
parameters. Noise generators are also used for generating random numbers. There are several circuits used for noise generation, including temperature-controlled
Noise_generator
Range of indoor air temperatures preferred by most people
Room temperature, colloquially, denotes the range of air temperatures most people find comfortable indoors while dressed in typical clothing. Comfortable
Room_temperature
Signal amplifier that doesn't significantly degrade the signal-noise ratio
low-noise amplifier (LNA) is an electronic component that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio
Low-noise_amplifier
Type of electronic noise
Flicker noise is a type of electronic noise with a 1/f power spectral density. It is therefore often referred to as 1/f noise or pink noise, though these
Flicker_noise
Algorithm for noise reduction in images
3D filtering (BM3D) is a 3-D block-matching algorithm used primarily for noise reduction in images. It is one of the expansions of the non-local means
Block-matching and 3D filtering
Block-matching_and_3D_filtering
Problem in naval architecture
On maritime vessels, noise and vibration are not the same but they have the same origin and come in many forms. The methods to handle the related problems
Noise and vibration on maritime vessels
Noise_and_vibration_on_maritime_vessels
Smoothing filler for images
A bilateral filter is a non-linear, edge-preserving, and noise-reducing smoothing filter for images. It replaces the intensity of each pixel with a weighted
Bilateral_filter
Long-term weather pattern of a region
Some of the meteorological variables that are commonly measured are temperature, humidity, atmospheric pressure, wind, and precipitation. In a broader
Climate
Image denoising algorithm
techniques, non-local means adds "method noise" (i.e. error in the denoising process) which looks more like white noise, which is desirable because it is typically
Non-local_means
Average temperature of the Earth's surface
Global surface temperature (GST) is the average temperature of Earth's surface at a given time. It is a combination of sea surface temperature and the near-surface
Global_surface_temperature
Random fluctuation in an electrical signal
by different devices and different processes. Thermal noise is unavoidable at non-zero temperature (see fluctuation-dissipation theorem), while other types
Noise_(electronics)
Cryptographic key exchange methodology
Random-resistor-random-temperature Kirchhoff-law-Johnson-noise key exchange, also known as RRRT-KLJN or simply KLJN, is an approach for distributing cryptographic
KLJN_Secure_Key_Exchange
Type of noise in signal processing
images sources of Gaussian noise arise during acquisition e.g. sensor noise caused by poor illumination and/or high temperature, and/or transmission e.g
Gaussian_noise
Radio telescope array
receivers have required cooling (often to cryogenic temperatures) to achieve sufficiently low noise to enable sensitive astronomical observations. This
Deep_Synoptic_Array
Device for producing coherent EM waves in the sub-visible spectrum
The whole system noise temperature looking at cold sky (2.7 kelvin in the microwave band) was 17 kelvin. This gave such a low noise figure that the Mariner
Maser
Ratio of the desired signal to the background noise
Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR
Signal-to-noise_ratio
Electronic oscillator circuit
of the crystal, noise of the oscillator circuits, mechanical shocks and vibrations, acceleration and orientation changes, temperature fluctuations, and
Crystal_oscillator
Power spectrum of a noise signal
of noise or noise spectrum refers to the power spectrum of a noise signal (a signal produced by a stochastic process). Different colors of noise have
Colors_of_noise
Minimum magnitude of input signal to produce a specified output by an electronic device
equivalent noise temperature in [K] of the source (e.g. antenna) at the input of the receiver T r x {\displaystyle T_{rx}} = equivalent noise temperature in [K]
Sensitivity_(electronics)
Psychotherapeutic method
facilitating natural sleep, unlike situations where external factors e.g. noise, temperature, etc. affect sleeping ability. Recursive anxiety is also a result
Paradoxical_intention
Physical constant relating particle kinetic energy with temperature
is used in calculating thermal noise in resistors. The Boltzmann constant has dimensions of energy divided by temperature, the same as entropy and heat
Boltzmann_constant
Noise pattern on digital imaging sensors
changes in the environment like different temperatures, exposure times, etc. The term "fixed pattern noise" usually refers to two parameters. One is the
Fixed-pattern_noise
Transfer of energy between circuits
transmission Other kinds of energy coupling: Acoustic coupler Antenna noise temperature Coupling loss Aperture-to-medium coupling loss Coupling coefficient
Coupling_(electronics)
Image noise reducing technique
called Perona–Malik diffusion, is a technique aiming at reducing image noise without removing significant parts of the image content, typically edges
Anisotropic_diffusion
Topics referred to by the same term
Internet country code top-level domain for Guatemala Antenna gain-to-noise-temperature, (G/T), a figure of merit for satellite antennas Gigabyte Technology
GT
Topics referred to by the same term
translocator Anacamptis (abbreviation Ant), a genus of orchids Antenna noise temperature Antlia, constellation abbreviation as standardized by the International
Ant_(disambiguation)
American research scientist (1902–1974)
"Probe Technique for the Measurement of Electron Temperature" (1951) "Electron Temperature vs Noise Temperature in Low Pressure Mercury-Argon Discharges" (1951
Adelaide_Easley
Airbreathing jet engine designed to provide thrust by driving a fan
noise associated with jet flow, the aerospace industry has sought to disrupt shear layer turbulence and reduce the overall noise produced. Fan noise may
Turbofan
Experiment using a resonant microwave cavity to find dark matter particles
amplifier noise temperature was around 2 K. In 2009, the first stage amplifier was replaced by a SQUID amplifier, which greatly lowered the noise (to less
Axion_Dark_Matter_Experiment
Random electric fluctuations in neurons
with a raise in temperature. Thermal noise is the weakest source of noise and can be considered negligible. Ionic conductance noise: Ion channels in
Neuronal_noise
British reality TV series (2010–)
room extras like snacks); Sleep quality (e.g. bed size and comfort, noise, temperature); and Breakfast (quality, choice, service etc.), before saying if
Four_in_a_Bed
Transmission of sound through indirect pathways in buildings
Flanking transmission, also known as noise flanking, a flanking path, or indirect sound transmission, is the transmission of sound between spaces through
Flanking_transmission
Type of parabolic antenna with a convex secondary reflector
receiving antennas this reduces reception of ground noise, resulting in a lower antenna noise temperature. Dual reflector shaping: The presence of a second
Cassegrain_antenna
Visible interference in an image
Gaussian noise in digital images arise during acquisition. The sensor has inherent noise due to the level of illumination and its own temperature, and the
Image_noise
Passive electronic component providing electrical resistance
voltage, or noise, across its terminals. This Johnson–Nyquist noise is a fundamental noise source which depends only upon the temperature and resistance
Resistor
cone – Antenna gain – Antenna height above average terrain – Antenna noise temperature – Antenna theory – Aperture (antenna) – Aperture-to-medium coupling
Index_of_electronics_articles
Quantum effect of uncertainty
Quantum noise is any noise arising from quantum mechanical phenomena such as field quantization or the uncertainty principle. Quantum noise differs from
Quantum_noise
Technical design of the components of a radar and its operation
power, PT. GR/T is the quotient of the receive gain and the antenna noise temperature. A high EIRP and GR/T are a prerequisite for long-range detection
Radar_engineering
French environmental non-profit organization
environmental organization responsible for monitoring the environmental noise in the Paris agglomeration. It was founded in 2004. Bruitparif is a non-profit
Bruitparif
Management of workplace health hazards
that could cause injury or disease. Physical hazards may include noise, temperature extremes, illumination extremes, ionizing or non-ionizing radiation
Occupational_hygiene
Australian physicist
gravitational wave detector NIOBE, which achieved the lowest observed noise temperature, and participated in a worldwide collaboration that set the best limit
David_Blair_(physicist)
US long-range C-band instrumentation radar
uncooled parametric amplifiers and a system noise temperature of 440 K (167 °C; 332 °F) giving it a noise figure of 4 dB. A major feature of the radar
AN/FPQ-6
Accounting of signal gains and losses in communications
2 dB/km, far lower than any other guided medium. Antenna gain-to-noise-temperature Friis transmission equation Isotropic radiator Multipath propagation
Link_budget
license: shrinkage-fields Random field Discrete Fourier transform Convolution Noise reduction Deblurring Jancsary, Jeremy; Nowozin, Sebastian; Sharp, Toby;
Shrinkage Fields (image restoration)
Shrinkage_Fields_(image_restoration)
Material which exhibits superconductivity above 0 °C
room temperature in films and pellets of a nanostructured material that is composed of silver particles embedded in a gold matrix. Due to similar noise patterns
Room-temperature superconductor
Room-temperature_superconductor
Random energy exchange from thermal masses
density depends on the temperature and is white at low frequencies), these two noise sources are distinct. Johnson–Nyquist noise arises from the random
Phonon_noise
side lobes have a two-fold effect, in that they contribute to system noise temperature in addition to reducing gain. Aperture blockage and deviation of reflector
Reflector_(antenna)
Reception of satellite television from FSS-type satellites
typical BUDs will usually need to be replaced with one of a lower noise temperature to receive digital broadcasts. With a suitable replacement LNB (provided
Television_receive-only
Distinct layer of temperature change in a body of water
thermal layer or the metalimnion in lakes) is a distinct layer based on temperature within a large body of fluid (e.g. water, as in an ocean or lake; or
Thermocline
Vacuum tube used to generate microwaves
detection using a BWO as a local oscillator, this figure corresponds to a noise temperature added by the oscillator of only 1000–3000 K. FR patent 1035379, Bernard
Backward-wave_oscillator
Highest operating temperature of a semiconductor
Junction temperature, short for transistor junction temperature, is the temperature of the actual semiconductor in an electronic device. In operation,
Junction_temperature
Chinese lunar communications satellite
a cooled X-band receiver for the frequency range 8–9 GHz with a noise temperature of less than 50 K and four selectable bandwidths (64, 128, 256 and
Queqiao-2
Canadian physicist (1936–2023)
There, Richard redefined the noise temperature of an FET as the product of its voltage noise and its gate current noise to allow the optimization of the
Jean-Paul_Richard
American astronomer and physicist (1916–1997)
developed by Dicke during WWII. His radiometer was characterized by a noise temperature calibration technique using a switchable resistor, known as "Dicke
Robert_H._Dicke
known. Required signal-to-noise ratio (SNR) Detection bandwidth (BW) Temperature T0 of the receiver system Receiver noise figure (NF) To calculate the
Minimum_detectable_signal
Microscopic device for detecting infrared radiation
image with higher resolution is created, but with a higher NETD (noise equivalent temperature difference (differential)) due to smaller pixels being less sensitive
Microbolometer
Various measures in telecommunications
In telecommunications, the term noise power has the following meanings: The measured total noise in a given bandwidth at the input or output of a device
Noise_power
Sense of physical or psychological ease
rate as the temperature around. This would be around 24 °C (75 °F) (room temperature), and people have no opinion about the temperature. Thermal neutrality
Comfort
September 21, 1962 No Law Without Lawyers Sue Marx & Pamela Conn color 22m 1985 Noise: Polluting the Environment Thomas G. Smith (producer); Vern O. Knudson color
List of Encyclopædia Britannica Films titles
List_of_Encyclopædia_Britannica_Films_titles
exhibits shot noise. The noise current is set by the filament temperature. The current is an exponential function of filament temperature. At low frequencies
Noise-figure_meter
Device to measure temperature
device that measures temperature (the hotness or coldness of an object) or temperature gradient (the rates of change of temperature in space). A thermometer
Thermometer
Scientific study of buildings
(i.e., perimeter zones) are affected by outdoor influences such as noise, temperature, and solar radiation, and by their ability to control these influences
Building_science
Measure of the sensitivity of a photodetector
(1994), doi:10.1063/1.357128 The factor of one half is explained by the Nyquist–Shannon sampling theorem. Noise-equivalent temperature Specific detectivity
Noise-equivalent_power
NOISE TEMPERATURE
NOISE TEMPERATURE
Male
Norse
Old Norse name YNGLING means "descendant of Ing."
Boy/Male
French
Forest.
Female
Norse
Old Norse name AUÃR means "deeply rich."
Male
Norse
Old Norse name composed of the name of the god Thor and the word gn�r "grumble, noise," hence "voice of Þórr."
Male
Celtic
, snipe(?).
Girl/Female
Australian, French, German
Renowned in Battle
Girl/Female
Australian, Nigerian
God will be Yours
Male
English
Middle English form of French Moisé, MOISE means "drawn out."
Male
Norse
Old Norse name ÃRI means "eagle."
Male
Norse
Old Norse name ÃRNI means "eagle."
Surname or Lastname
English
English : variant spelling of Boyce.
Female
French
Feminine form of French François, FRANÇOISE means "French."
Male
Norse
Old Norse name HJORTR means "hart, stag."
Female
Norse
Variant spelling of Old Norse Siv, SIF means "bride."
Male
Norse
Old Norse form of Hebrew David, DAVIÃ means "beloved."
Surname or Lastname
English
English : variant spelling of Noyce.
Male
Norse
Old Norse name SVEINN means "boy."
Male
Irish
Irish Gaelic name, of unknown NAOISE means. In Celtic mythology, this is the name of the warrior nephew of King Conchobar and beloved of Deirdre.
Female
French
French form of Latin Elwisia, ÉLOISE means "hale-wide; very healthy and sound."Â
Boy/Male
Australian, Celtic, Irish
Mythical Name
NOISE TEMPERATURE
NOISE TEMPERATURE
NOISE TEMPERATURE
NOISE TEMPERATURE
NOISE TEMPERATURE
NOISE TEMPERATURE
NOISE TEMPERATURE
n.
A snub nose.
n.
The Norse language.
a.
Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.
superl.
Making a noise, esp. a loud sound; clamorous; vociferous; turbulent; boisterous; as, the noisy crowd.
n.
A loud noise resulting from collision; a noisy collision of bodies; a collision.
v. t.
To touch with the nose; to push the nose into or against; hence, to interfere with; to treat insolently.
n.
Great tumult; violent disturbance and noise; noisy confusion; bustle and clamor.
n.
A red nose.
v. t.
To disturb with noise.
n.
Hence: Any assembly characterized by noise and confusion; a noisy frolic or gathering.
superl.
Full of noise.
v. t.
To utter in a nasal manner; to pronounce with a nasal twang; as, to nose a prayer.
v. t.
To tie in a noose; to catch in a noose; to entrap; to insnare.
v. i.
To sound; to make a noise.
n.
To balance; to make of equal weight; as, to poise the scales of a balance.
v. i.
To run at the nose; to make a snuffling noise.
n.
A projecting end or beak at the front of an object; a snout; a nozzle; a spout; as, the nose of a bellows; the nose of a teakettle.
imp. & p. p.
of Noise
n.
Confused, clattering noise; din; noisy talk or sport.