compression
n. pressing together, making smaller using pressure | ||||
Search Dictionary:
Compression definition was found in categories: Computer & Internet(11) Language, Idioms & Slang(4) Entertainment & Music(3) Science & Technology(5) Sports(1) Encyclopedia(1)
Compression Definition from Computer & Internet Dictionaries & Glossaries
| FOLDOC |
compression
Ogg Vorbis PKLITE Perceptional Adaptive Subband Coding PKUNZIP progressive/sequential coding Real Video PKWARE, Inc. gzip Musicam MPEG-2 MPEG-21 MPEG-2.5 audio layer 3 MPEG-2 AAC Low Profile Scalable Sampling Rate MPEG-2 audio layer 3 MPEG-1 Spectral Band Replication MP3Pro MPEG-2 Multi Channel Extention MPEG-3 MPEG-4 MPEG-4 AAC Main Profile MPEG-4 Advanced Audio Coding Scalable Sampling Rate MPEG-4 Harmonics, individual lines and noise MPEG-7 MPEGplus MPEG-2 Low Sampling Frequencies Extention lossy audio compression Group 3 LHARC Group 4 APE lossless lossless audio compression Lossless Predictive Audio Compression MPEG-1 audio layer 1 tgz deflate LPAC DjVu MPEG-4 Harmonic Vector eXCitation gunzip G3 Moving JPEG Moving Picture Experts Group decompress Shorten transparent audio coding unzip zip Twin Vector Quantization
1. <application> (Or "compaction") The coding of data to save storage space or transmission time. Although data is already coded in digital form for computer processing, it can often be coded more efficiently (using fewer bits). For example, run-length encoding replaces strings of repeated characters (or other units of data) with a single character and a count. There are many compression algorithms and utilities. Compressed data must be decompressed before it can be used.
The standard Unix compression utilty is called compress though GNU's superior gzip has largely replaced it. Other compression utilties include pack, zip and PKZIP.
When compressing several similar files, it is usually better to join the files together into an archive of some kind (using tar for example) and then compress them, rather than to join together individually compressed files. This is because some common compression algorithms build up tables based on the data from their current input which they have already compressed. They then use this table to compress subsequent data more efficiently.
See also TIFF, JPEG, MPEG, Lempel-Ziv Welch, "lossy", "lossless".
Compression FAQ.
Usenet newsgroups: news:comp.compression, news:comp.compression.research.
2. Reducing the dynamic range of an audio signal, making quiet sounds louder and loud sounds quieter. Thus, when discussing digital audio, the preferred term for reducing the total amount of data is "compaction". Some advocate this term in all contexts.
(2001-01-30)
Ogg Vorbis PKLITE Perceptional Adaptive Subband Coding PKUNZIP progressive/sequential coding Real Video PKWARE, Inc. gzip Musicam MPEG-2 MPEG-21 MPEG-2.5 audio layer 3 MPEG-2 AAC Low Profile Scalable Sampling Rate MPEG-2 audio layer 3 MPEG-1 Spectral Band Replication MP3Pro MPEG-2 Multi Channel Extention MPEG-3 MPEG-4 MPEG-4 AAC Main Profile MPEG-4 Advanced Audio Coding Scalable Sampling Rate MPEG-4 Harmonics, individual lines and noise MPEG-7 MPEGplus MPEG-2 Low Sampling Frequencies Extention lossy audio compression Group 3 LHARC Group 4 APE lossless lossless audio compression Lossless Predictive Audio Compression MPEG-1 audio layer 1 tgz deflate LPAC DjVu MPEG-4 Harmonic Vector eXCitation gunzip G3 Moving JPEG Moving Picture Experts Group decompress Shorten transparent audio coding unzip zip Twin Vector Quantization
1. <application> (Or "compaction") The coding of data to save storage space or transmission time. Although data is already coded in digital form for computer processing, it can often be coded more efficiently (using fewer bits). For example, run-length encoding replaces strings of repeated characters (or other units of data) with a single character and a count. There are many compression algorithms and utilities. Compressed data must be decompressed before it can be used.
The standard Unix compression utilty is called compress though GNU's superior gzip has largely replaced it. Other compression utilties include pack, zip and PKZIP.
When compressing several similar files, it is usually better to join the files together into an archive of some kind (using tar for example) and then compress them, rather than to join together individually compressed files. This is because some common compression algorithms build up tables based on the data from their current input which they have already compressed. They then use this table to compress subsequent data more efficiently.
See also TIFF, JPEG, MPEG, Lempel-Ziv Welch, "lossy", "lossless".
Compression FAQ.
Usenet newsgroups: news:comp.compression, news:comp.compression.research.
2.
(2001-01-30)
| Glossary of the European Information Society |
Compression
The technique of reducing the amount of data in a signal in order to reduce the amount of required transmission capacity, the signal being reconstructed in its original form at the receiving end. A device to do this is a "codec" (coder-decoder).
The technique of reducing the amount of data in a signal in order to reduce the amount of required transmission capacity, the signal being reconstructed in its original form at the receiving end. A device to do this is a "codec" (coder-decoder).
| A Glossary of Internet & PC Terminology |
Compression
A technique used to considerably reduce the size of a file without losing any of the original information. The compression process alters the content of the file but this can is completely recovered by reversing the process.
A technique used to considerably reduce the size of a file without losing any of the original information. The compression process alters the content of the file but this can is completely recovered by reversing the process.
| Multimedia Glossary |
compression
the translation of data to a more compact form for storage or transmission (after which it can be restored to normal form)
the translation of data to a more compact form for storage or transmission (after which it can be restored to normal form)
| Digital Video (DV) & video edit terms / Eng2Eng v1.0 (web compilation) |
compression
The digital representation of media in an efficient storage format. For video, motion-JPEG is often used. Compression may be lossy in that the original picture cannot be reconstructed exactly.
The digital representation of media in an efficient storage format. For video, motion-JPEG is often used. Compression may be lossy in that the original picture cannot be reconstructed exactly.
| WebGuest Web Glossary |
| Jensen's Technology Glossary |
Compression
Has several meanings. In one context, it refers to algorithms for shrinking the storage space required for files stored on discs. In those instances, nothing is usually sacrificed in the compression, although files may have to be decompressed before they can be utilized later on. In another context, compression refers to the storage of graphics or video files in such a way that they can be stored and/or processed more efficiently on computers. In the latter case, something (e.g., color depth, resolution, image sharpness, etc.) is usually lost in the process. (See also GIF, JPEG, Indeo, and MPEG)
Has several meanings. In one context, it refers to algorithms for shrinking the storage space required for files stored on discs. In those instances, nothing is usually sacrificed in the compression, although files may have to be decompressed before they can be utilized later on. In another context, compression refers to the storage of graphics or video files in such a way that they can be stored and/or processed more efficiently on computers. In the latter case, something (e.g., color depth, resolution, image sharpness, etc.) is usually lost in the process. (See also GIF, JPEG, Indeo, and MPEG)
| Multimedia Glossary |
Compression (file)
Process for reducing file size, often called "zipping" or "archiving". The resulting, compressed file can be from a single, large file or can contain several files that have been squeezed into a single file. The many-to-one compression makes file group identification, copying, and transporting faster and easier.
Process for reducing file size, often called "zipping" or "archiving". The resulting, compressed file can be from a single, large file or can contain several files that have been squeezed into a single file. The many-to-one compression makes file group identification, copying, and transporting faster and easier.
Compression (video)
Process which reduces the number of bytes required to store/transmit digital video . Typical schemes involve comparing frames and coding-out, or eliminating, inter-frame and intra-frame redundancies. The compression may be done by software, hardware or a combination of the two. On playback, the data is decompressed. See CODEC . Why compress video data? To reduce storage space and to playback faster. A full-screen (640 x 480 pixels ) image with 16.4 million colors takes up 1 Mb of memory. For full-motion, the computer needs to display 30 pictures/frames per second, thus requiring it to "shuffle" 30 Mb of data every second. Storing 10 seconds of video would require 300 Mb. Jan Ozer, President of Doceo Publishing , is the foremost authority on digital video/CODEC's.
Compression, Lossless
digitized video containing ALL the original video information.
Compression, Lossy
digitized video which, to save space, does NOT contain all the original video information.
| Steve's Digicams Digital Camera Dictionary |
Compression
A digital photograph creates an image file that is huge, a low-resolution 640x480 image has 307,200 pixels. If each pixel uses 24 bits (3 bytes) for true color, a single image takes up about a megabyte of storage space. To make image files smaller almost every digital camera uses some form of compression. See the "JPG" entry below.
A digital photograph creates an image file that is huge, a low-resolution 640x480 image has 307,200 pixels. If each pixel uses 24 bits (3 bytes) for true color, a single image takes up about a megabyte of storage space. To make image files smaller almost every digital camera uses some form of compression. See the "JPG" entry below.
| INTERNET TERMS&ACRONYMSV1.0 |
COMPRESSION
Compression is a technique to make a file or a data stream compacted in order to save server space and reduce transfer times.There are a number of programs that will compress files such as WinZip,gnuzip,PKZIP,Stuffit etc.Files with the following extensions are almost always compressed files;arc,arj,gz,taz,tar,zip,zoo,Z,tgz,taZ,lha,lhz.
Compression is a technique to make a file or a data stream compacted in order to save server space and reduce transfer times.There are a number of programs that will compress files such as WinZip,gnuzip,PKZIP,Stuffit etc.Files with the following extensions are almost always compressed files;arc,arj,gz,taz,tar,zip,zoo,Z,tgz,taZ,lha,lhz.
| Glossary of Electronic Music Terms |
compression
(1) The process of reducing the amplitude range of an audio signal by reducing the peaks and bringing up the low levels. (2) The process of reducing a data file in size, often by noting patterns in the data and summarizing them. Some types of audio data compression are "lossy," meaning the quality of the audio is reduced.
(1) The process of reducing the amplitude range of an audio signal by reducing the peaks and bringing up the low levels. (2) The process of reducing a data file in size, often by noting patterns in the data and summarizing them. Some types of audio data compression are "lossy," meaning the quality of the audio is reduced.
Compression Definition from Language, Idioms & Slang Dictionaries & Glossaries
| Webster's Revised Unabridged Dictionary (1913) |
Compression
(n.)
The act of compressing, or state of being compressed.
(n.)
The act of compressing, or state of being compressed.
| WordNet 2.0 |
compression
Noun
1. an increase in the density of something
(synonym) compaction, concretion, densification
(hypernym) concentration
2. the process or result of becoming smaller or pressed together; "the contraction of a gas on cooling"
(synonym) condensation, contraction
(hypernym) shrinking, shrinkage
(hyponym) constriction, coarctation
(derivation) compress, constrict, squeeze, compact, contract, press
3. encoding information while reducing the bandwidth or bits required
(antonym) decompression
(hypernym) encoding, encryption
(hyponym) image compression
(derivation) compress, compact, pack together
4. applying pressure
(synonym) compressing
(antonym) decompression, decompressing
(hypernym) press, pressure, pressing
(hyponym) squeeze, squeezing
(derivation) compress, constrict, squeeze, compact, contract, press
Noun
1. an increase in the density of something
(synonym) compaction, concretion, densification
(hypernym) concentration
2. the process or result of becoming smaller or pressed together; "the contraction of a gas on cooling"
(synonym) condensation, contraction
(hypernym) shrinking, shrinkage
(hyponym) constriction, coarctation
(derivation) compress, constrict, squeeze, compact, contract, press
3. encoding information while reducing the bandwidth or bits required
(antonym) decompression
(hypernym) encoding, encryption
(hyponym) image compression
(derivation) compress, compact, pack together
4. applying pressure
(synonym) compressing
(antonym) decompression, decompressing
(hypernym) press, pressure, pressing
(hyponym) squeeze, squeezing
(derivation) compress, constrict, squeeze, compact, contract, press
| hEnglish - advanced version |
compression
compression
\com*pres"sion\ (?), n. [l. compressio: cf. f. compression.] the act of compressing, or state of being compressed. "compression of thought."
compression
n
1. an increase in the density of something [syn: compaction, concretion, densification]
2. the process or result of becoming smaller or pressed together: "the contraction of a gas on cooling" [syn: condensation, contraction]
3. encoding information while reducing the bandwidth or bits required [ant: decompression]
4. applying pressure [syn: compressing]
[ant: decompression]
similar words(15)
lossy audio compression
lossless audio compression
lzw compression
lempel-ziv welch compression
lz78 compression
lempel-ziv compression
data compression
globe of compression
lz77 compression
lz compression
lzh compression
image compression
video compression
compression bandage
lossless predictive audio compression
compression
\com*pres"sion\ (?), n. [l. compressio: cf. f. compression.] the act of compressing, or state of being compressed. "compression of thought."
compression
n
1. an increase in the density of something [syn: compaction, concretion, densification]
2. the process or result of becoming smaller or pressed together: "the contraction of a gas on cooling" [syn: condensation, contraction]
3. encoding information while reducing the bandwidth or bits required [ant: decompression]
4. applying pressure [syn: compressing]
[ant: decompression]
similar words(15)
lossy audio compression
lossless audio compression
lzw compression
lempel-ziv welch compression
lz78 compression
lempel-ziv compression
data compression
globe of compression
lz77 compression
lz compression
lzh compression
image compression
video compression
compression bandage
lossless predictive audio compression
| for Vocabulary Exams of KPDS, YDS,UDS (in Turkey); and SAT in America |
compression
Constraint, as by force or authority.
Constraint, as by force or authority.
Compression Definition from Entertainment & Music Dictionaries & Glossaries
| Guitar Glossary |
Compression
The intentional reduction in dynamic range to increase sustain and/or add punchiness, caused by a the use of a compressor/limiter.
The intentional reduction in dynamic range to increase sustain and/or add punchiness, caused by a the use of a compressor/limiter.
| film and video |
Compression
The reduction of a span of amplitudes done for the purpose of limiting the reproduction of those amplitudes. (Post Production)
The reduction of a span of amplitudes done for the purpose of limiting the reproduction of those amplitudes. (Post Production)
| English to Federation-Standard Golic Vulcan |
Compression
lerakh'es
lerakh'es
Compression Definition from Science & Technology Dictionaries & Glossaries
| Dictionary of Automotive Terms |
Compression
1. Applying pressure to a spring, or any springy substance, thus causing it to reduce its length in the direction of the compressing force.
2. Applying pressure to a gas, thus causing a reduction in volume .
3. One of the essential factors in a internal combustion engine (fuel, air, proper proportion of mixture, compression, timing , spark ). It is the squeezing of the fuel-air mixture in the cylinder of a spark-ignition engine or the squeezing of the air in a diesel engine . Compression makes the process of combustion more effective and increases engine efficiency . Also see primary compression and secondary compression .
1. Applying pressure to a spring, or any springy substance, thus causing it to reduce its length in the direction of the compressing force.
2. Applying pressure to a gas, thus causing a reduction in volume .
3. One of the essential factors in a internal combustion engine (fuel, air, proper proportion of mixture, compression, timing , spark ). It is the squeezing of the fuel-air mixture in the cylinder of a spark-ignition engine or the squeezing of the air in a diesel engine . Compression makes the process of combustion more effective and increases engine efficiency . Also see primary compression and secondary compression .
| Fiber Optics, Optical Networking Terms |
Compression
A process in which the dynan-dc range or data rate of a signal is reduced by controlling it as a function of the inverse relationship of its instantaneous value relative to a specified reference level. Compression is usually accomplished by separate devices called compressors and is used for many purposes such as: improving signal-to-noise ratios, preventing overload of succeeding elements of a system, or matching the dynamic ranges of two devices. Compression can introduce distortion, but it is usually not objectionable.
A process in which the dynan-dc range or data rate of a signal is reduced by controlling it as a function of the inverse relationship of its instantaneous value relative to a specified reference level. Compression is usually accomplished by separate devices called compressors and is used for many purposes such as: improving signal-to-noise ratios, preventing overload of succeeding elements of a system, or matching the dynamic ranges of two devices. Compression can introduce distortion, but it is usually not objectionable.
| Telecommunication Standard Terms |
| Technical English by wpv |
COMPRESSION
Term used to denote increase of pressure on a fluid by using mechanical energy.
Term used to denote increase of pressure on a fluid by using mechanical energy.
| RF Electronics |
Compression
Reduction in the amount of information to accomodate cost-effective digital transmission.
Reduction in the amount of information to accomodate cost-effective digital transmission.
Compression Definition from Sports Dictionaries & Glossaries
| Worldgolf |
compression
The flattening of the ball against the clubface at impact. Also the degree of resilience of a ball.
The flattening of the ball against the clubface at impact. Also the degree of resilience of a ball.
Compression Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Compression
Compression itself 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.
| See more at Wikipedia.org... |