Noise (disambiguation)

Look up noise in Wiktionary, the free dictionary.

Noise is a variety of sound, usually meaning any unwanted sound.

Noise may also refer to:

Random or unwanted signals

Acoustic noise

In transportation

Aircraft noise
Jet noise, caused by high-velocity jets and turbulent eddies
Noise and vibration on maritime vessels
Noise, vibration, and harshness, quality criteria for vehicles
Traffic noise, including roadway noise and train noise

Other acoustic noise

Noise (acoustic), technical term for any sound, even deliberate
Artificial noise, in spectator sports
Background noise, in acoustics, any sound other than the monitored one
Comfort noise, used in telecommunications to fill silent gaps
Grey noise, random noise with a psychoacoustic adjusted spectrum
Industrial noise, relevant to hearing damage and industrial hygiene
Noise pollution, that affects negatively the quality of life

Noise in biology

Cellular noise, in biology, random variability between cells
Developmental noise, variations among living beings with the same genome
Neuronal noise, in neuroscience
Synaptic noise, in neuroscience
Transcriptional noise, in biochemistry, errors in genetic transcription

Noise in computer graphics

Noise in computer graphics refers to various pseudo-random functions used to create textures, including:

Gradient noise, created by interpolation of a lattice of pseudorandom gradients
- Perlin noise, a type of gradient noise developed in 1983
Simplex noise, a method for constructing an n-dimensional noise function comparable to Perlin noise
Simulation noise, a function that creates a divergence-free field
Value noise, created by interpolation of a lattice of pseudorandom values; differs from gradient noise
Wavelet noise, an alternative to Perlin noise which reduces problems of aliasing and detail loss
Worley noise, a noise function introduced by Steven Worley in 1996

Noise in electronics and radio

Noise (signal processing), various types of interference
- Noise (electronics), related to electronic circuitry
  - Ground noise, appearing at the ground terminal of audio equipment
- Image noise, related to digital photography
- Noise (radio), interference related to radio signals
  - Atmospheric noise, radio noise caused by lightning
  - Cosmic noise, radio noise from outside the Earth's atmosphere
- Noise (video), "snow" on video or television pictures

Noise in mathematics

Any one of many statistical types or colors of noise, such as
- White noise, which has constant power spectral density
- Gaussian noise, with a probability density function equal to that of the normal distribution
- Pink noise, with spectral density inversely proportional to frequency
- Brownian noise or "brown" noise, with spectral density inversely proportional to the square of frequency
Pseudorandom noise, in cryptography, artificial signal that can pass for random
Statistical noise, a colloquialism for recognized amounts of unexplained variation in a sample
Noise-based logic, where logic values are different stochastic processes
Noise print, a statistical signature of ambient noise, used in its suppression

Other types of noise

Noise (economic), relates to a theory of pricing developed by Fischer Black
Communication noise, factors that impair human-to-human communication
Electrochemical noise, electrical fluctuations in electrolysis, corrosion, etc.
Internet background noise, data packets addressed to IP addresses or ports where there is no device to receive them
Meta noise, irrelevant metadata in computer files
Noise trader, in financial research, a stock trader that makes random decisions
Phonon noise, in materials science
Seismic noise, random tremors of the ground

Measures of noise intensity

Noise figure, the ratio of the output noise power to attributable thermal noise
Ambient noise level, the background sound pressure level at a given location
Noise power, with several related meanings
Noise spectral density, N_o measured in Watt/Hertz
Noise temperature, temperature that would produce equivalent semiconductor noise

In arts and entertainment

In film and television

Noise (2007 American film), a comedy-drama written and directed by Henry Bean
Noise (2007 Australian film), a drama written and directed by Matthew Saville
Noise (programming block), a Fuji TV late-night anime programming block
The Noise (TV series), a 1996 magazine show on ITV
New York Noise, an indie rock music video TV program by NYCTV, 2003-2009

In journalism and literature

Noise, a 2006 popular science book by Bart Kosko
NOiSE, a manga by Tsutomu Nihei
The Noise, a monthly newspaper in Northern Arizona
Noise: The Political Economy of Music, a 1977 nonfiction book by Jacques Attali

In music

Noise in music, the occurrence of noise(s) in music, including noise reduction and uses in instrument tone, in composition and in performance
- String noise, made by guitar players sliding the fingers over the strings

Musical styles

Noise music, a noise-based aesthetic in experimental music and sound art
- Power noise, a derivative of noise music
Noise pop, an alternative rock genre developed in the UK in the mid-1980s
Noise rock, a style of rock music prominent in the 1980s
- Japanese noise rock

Musical recordings

Noise (Archive album)
Noise, an album by DecembeRadio
"Noise" (song), a 2016 song by Kenny Chesney
Le Noise, a 2010 album by Canadian musician Neil Young
The Noise (album), a 1993 album by English singer Peter Hamill
The Noise: Frejus, a live video by the band King Crimson

Other uses in music

The Noise (band), Puerto Rican musical collective
Noise Pop Festival, a indie rock festival started 1993 in San Francisco
Noise Records, a German record label founded in 1983

Other uses in arts and entertainment

Noise FM 876, a radio station in Australia
Noise (company), a second-party video game developer for Nintendo

In sport

Knoxville Noise, a basketball franchise in Knoxville, TN
Nashville Noise, a basketball franchise in Nashville, TN

Other uses

Noise (Goidelic mythology) or Naoise, a figure in Irish mythology
The Noises, a set of privately owned islands northeast of Rakino Island, New Zealand