Compression may refer to:
Physical science
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Compression (physics)
In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions.Ferdinand ...
, size reduction due to forces
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Compression member, a structural element such as a column
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Compressibility, susceptibility to compression
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Gas compression
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Compression ratio
The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values.
A fundamental specification for such engines, it is measured two ways: the stati ...
, of a combustion engine
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Compression (geology)
*Compression or
compressive strength
In mechanics, compressive strength or compression strength is the capacity of a material or structure to withstand loads tending to reduce size (as opposed to tensile strength which withstands loads tending to elongate). In other words, compre ...
Information science
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Data compression, reducing the data required for information
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Audio compression (data)
Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to:
Sound
*Audio signal, an electrical representation of sound
*Audio frequency, a frequency in the audio spectrum
*Digital audio, representation of sound ...
, reducing the data required for audio
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Bandwidth compression
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Compression artifact
A compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. Lossy data compression involves discarding some of the media's data so that it beco ...
, defect in data due to compression
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Image compression
Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior r ...
, of digital images
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Video compression
In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression ...
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One-way compression function, a cryptographic primitive
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Dynamic range compression, reducing audio dynamic range
Medicine
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Brain compression, a medical condition
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Compression bandage
A bandage is a piece of material used either to support a medical device such as a dressing or splint, or on its own to provide support to or to restrict the movement of a part of the body. When used with a dressing, the dressing is applie ...
*Pressing on the lower abdominal area in an
intravenous pyelogram
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Cold compression therapy, for minor injuries
Other
*Amplifier
gain compression, due to nonlinearity
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Compression (dance), several techniques
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Compression (functional analysis) In functional analysis, the compression of a linear operator ''T'' on a Hilbert space to a subspace ''K'' is the operator
:P_K T \vert_K : K \rightarrow K ,
where P_K : H \rightarrow K is the orthogonal projection onto ''K''. This is a natural ...
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Compression (phonetics), running syllables together
See also
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*
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Compaction (disambiguation)
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Compress
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Compression garment
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Compressor (disambiguation)
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Decompression (disambiguation) Decompression has several meanings, some of which are covered by several articles:
* Data decompression, the action of reversing data compression
* Decompression (physics), the release of pressure and the opposition of physical compression
** Decom ...
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Expansion (disambiguation)
Expansion may refer to:
Arts, entertainment and media
* ''L'Expansion'', a French monthly business magazine
* Expansion (album), ''Expansion'' (album), by American jazz pianist Dave Burrell, released in 2004
* Expansions (McCoy Tyner album), ''Exp ...
{{disambiguation