Compression

From Wikipedia, the free encyclopedia

Compression may refer to:

• Gas compression, raising the pressure and reducing the volume of gases
• Physical compression, the result of the subjection of a material to compressive stress
• Compression arch suspended-deck bridge, a compression arch rises above the deck
• Compression (geology), a system of forces that tend to decrease the volume of or shorten rocks.
• Compression in zoology and paleontology refers to where an animal, or part of an animal is shorter or narrower compared with other animals in the same group; eg the body of a lizard may be compressed (flattened) so it can better fit into crevices under rocks.
• Compression ratio, a number that predicts the performance of any internal-combustion engine
• Data compression, encoding information using fewer bits
  • Image compression
  • Audio data compression
  • Video compression
    • Compression artifact, noticeable defects in audio or video that has been compressed
  • Bandwidth compression, in telecommunications
• Gain compression in electronic amplifiers, which is a result of device non-linearity
• Audio level compression, usually artificially introduced gain compression to improve the perceived quality of audio
• Compression (functional analysis), in mathematics
• Compression bandage, designed to reduce the flow of blood
• Compression, the opposite of Tension.

Compressibility also has the special meanings:

• Compressibility, a measure of volume change resulting from pressure (typically for fluids)
• Reciprocal of the bulk modulus (typically for solids)

[edit] See also

• Gas compressor
• Compressor
• Kompressor
• Compressor (software), Final Cut video and audio compression and encoding application
• compress, a UNIX program
• Compaction
• Decompression
• Expansion
• Compression shorts