Methods used to substantially reduce the amount of picture information sent in a video, audio, or data signal. A video CODEC compresses a video signal by only transmitting information about areas of a television picture than change over time or space.

A technique for making raster data sizes smaller, so that they consume less RAM and disk space. A TIFF file in its native or raw form is uncompressed. Compression is achieved by applying mathematical algorithms to the data storage process.

The translation of audio, digital data, or video into a more compact form for storage and transmission. Computer algorithms and techniques such as ETSI, G.722, JPEG or MPEG enable data content compression. A digital process that allows data to be stored or transmitted using less than the normal number of bits. Video compression refers to techniques that reduce the number of bits required to store or transmit images.

Algorithmic process by which files can be reduced in size for storage purposes. An algorithm which systematically removes 'bits' of the data from the original digital file. The greater the compression, the smaller the bandwidth required to transmit the signal.

The conversion of data to a more compact form for storage or transmission. Compression can be lossy (used where there is redundant information in the original data) or lossless (where the original data can be recovered in its entirety).

Technology that reduces the size of a file. Using compression allows a file to be transmitted over the Internet more quickly and to be stored using less space. Some common compression standards are Zip files for the PC, Stuffit files for the Mac, and MP3

Used with Digital Video Recorders (DVRs) DVRs use video compression to store video frames (images) onto hard drives (HDD) This so more video data can be stored on the HDD. The video stream is analyzed and information that is indiscernible to the viewer is removed. Information in the video that is repeated such as a still image is assigned a code and will be stored as fewer bits. Some of the standards are MPEG, MPEG-4, MJPEG, Wavelet and many more. They compress video in different ways and effect the length of the recording. Generally less compression means higher quality video but uses more hard disk space. Detailed information about video compression can be found here http://www.wave-report.com/tutorials/VC.htm

Compression refers to the process of reducing the number of bits required to represent data without altering the meaning of the information being conveyed by the data. The primary reason for using compression techniques is to optimize the use of the communication channel.

Decreasing the size of stored information by reducing the representation of the information without significantly diminishing the information itself, usually by removing redundancies. Requires decompression upon retrieval. Lossless compression allows the original data to be recreated exactly. Lossy compression sacrifices some accuracy to achieve greater compression.

Techniques to reduce the number of bits required to represent information in data transmission or storage, thereby conserving bandwidth and/or memory. (2) Application technique.

A means of reducing file size. Lossy compression permanently discards information in the original file. Lossless compression does not discard information in the original file.

Compression is when the amplitude is squashed to reduce the level difference between the loud and soft parts of the music (the peaks and troughs on the wave form). This is often used by radio stations to improve the sound of cheap radios with limited output capability when played loud. It is usually avoided in Hi-Fi, because it restricts dynamics. However, with powered subwoofers, a form of compression called soft clipping can be useful to avoid the harsh sound of transistors clipping when the amplifier is used near its limit. It's similar to the way valves (tubes) limit their output.

The process of making computer data smaller so less is needed to represent the same information and, consequently, the information takes up less disk or file space and may be transmitted in less time. Computerized composition All-inclusive term for the use of computers to automatically perform the functions of the hyphenation, justification, and page formatting.

Reducing the representation of information, but not the information itself or reducing the bandwidth or bits necessary to encode information. Full standard coding of broadcast quality television typically requires 45 to 90 megabits per second. Compressed video includes signals from 3 mb/s down to 56 kb/s.

Any technique which reduces the size of a file thereby reducing the required bandwidth for transportation of the data. Compression can be 'lossless' - where the decompressed data is identical to the original

is a general description for a family of mathematical techniques which can reduce the amount of data and therefore improve digital storage efficiency and retrieval rates.

Reducing how much digital information is sent by eliminating redundant or unnecessary data (for example, images on a screen that don't change from frame to frame, or sounds at frequencies the human ear can't detect). This is what allows so much information to be sent over a digital signal. See MPEG.

Compression expresses the given picture will less data and compression rate alone does not give an indication of final picture quality. It is necessary to compress the data in order to store and transmit digital television data using an economical amount of bandwidth. Different rates of compression are used with different and practically, the more data used the better the image quality. Multiple generations of compressed images always result in image degradation.

Compressing a file means making it smaller, which makes it faster and easier to send between computers.

a technique for reducing the size of a bit string, typically by replacing frequently occurring sequences with special short codes (for example, one can represent the most frequently used letters or words in a text file with very short bit sequences).

The compacting of files to save storage space and reduce the time it takes to transfer file.

Technology to reduce the size of files and save bandwidth. See also bandwidth, lossy compression, non-lossy compression.

A technique used for reducing the size of video detail information to enable faster transmission of video frames and reduced storage space on recording devices.

Storing data in a format that reduces the file size. This is not always a good method of storing digital photos, because some compression methods sacrifice image quality (in the form of artifacts) for smaller file sizes.( see Artifacts)

A method of reducing the amount of data contained in a file in order to reduce file size and/or up and downloading time. With images and sound files there are so-called “lossy” and “non-lossy” compression methods. The latter allow for more compression, but some details are lost in the process.

In sound, a pulse of compressed air or other matter. Image of compression in a spring.

the act of pressing together to reduce volume

The process of shrinking a material.

A technique for more efficient data storage. Lossless compression allows the file to be uncompressed, rebuilt in its original format without loss of data; but lossless compression is rare. Lossy compression can be uncompressed, but some information (e.g., details of color in an image, or modulation in an audio file) will be lost. Lossy compression algorithms vary in the amount of data lost; higher compression results in smaller files but greater distortion.

A method of reducing the number of bits required to store or transmit programs by the removal of redundant and/or non-critical information in the digital picture and sound. The DTV broadcasting standard for Canada, uses the MPEG-2 video and the AC-3 audio compression coding. Compression allows the delivery of more programs in a single channel.

The amount of data that it takes to represent an image is reduced (or compressed) in order to use less space in your camera.

Files that can be downloaded from the Internet are usually stored in a compressed format to save disk space and downloading time. Compression is the process of shrinking, or compressing files. Find out more about compression and decompression.

The translation of data (video, audio, digital, or a combination) to a more compact form for storage or transmission.

A process for reducing the number of bits required to transmit information. For ISDN, the result of compression is increased data transmission speed.

The hearing device automatically adjusts the loudness of what you hear. When loud sounds occur the hearing device reproduces them at a comfortable level. In quiet conditions, this feature makes soft speech easier to hear.

Reducing the size of a file on disk or in memory. Compression can be lossless (ie compressed without any loss of information) or lossy, in which some data is discarded, on the assumption that the loss will not be noticeable when the data is decompressed.

See Lossless compression and Lossy compression.

Data Compression is a process that reduces the size of a file by "eliminating" any redundant data. Many different schemes of compression exist for audio, computer data, video etc. Compressing a file saves storage space and allows for faster transmission of data. Decompression is the reverse process to restore data to its original form.

The process of taking a data object and reducing its size. The tradeoff that occurs is between the loss of resolution versus the reduction in size.

Techniques/procedures used to reduce the amount of storage space required to store information.

Reduction of the size of computer files and records; saves storage space and increases the speed with which the file can travel over the Internet or across networks. EDI records are much more compressed in their original state than XML records by a factor of approximately 10.

Making a file smaller so that it takes up less storage space or becomes easier to use CU-SeeMe Cu-SeeMe is a cheap product for Internet videoconferencing. Each user installs the CU-SeeMe software, allowing them to have person-to-person of group discussions. Users with a small-attached video camera (optional) can transmit their picture to other uses in a conference.

Reducing the bandwidth or number of bits needed to encode information or encode a signal. Compression saves transmission time or capacity. It also saves storage space on storage devices such as hard drives, tape drives and floppy disks.

The process of reducing the number of bits required to represent information, by removing redundancy. In the case of information Content such as video and audio it is usually necessary to extend this process by removing, in addition, information that is not redundant but is considered lessimportant. Compression techniques that are used include: blanking suppression, DPCM, sub-Nyquist sampling, transform coding, statistical coding, sub-band coding, vector coding, run length coding, variable length coding, fractal coding and wavelet coding.

A technique to reduce the size of a file in order to make it more manageable and quicker to download. Compressed files have to be extracted using a utility such as PKZip or WinZip. Such files usually have a .zip extension.

Compression is a method of compacting data in order to save storage space or the time it takes to download. JPEG's images are very compressed and in fact loose a lot of picture detail. Ideal for in the internet, but not for print.

The reduction in size of a collection of digital information.

The translation of a file into a form which takes less space and less time to.transmit.

The process whereby the raw image is represented with fewer bytes. Both Lossy and Lossless compression schemes are available.

A method by which video or audio signals can be stored or transmitted with much greater efficiency than the raw signal itself. Compression typically requires special equipment or programs.

Reduction of the size of digital image file to save storage space. There are two types of compression: lossless and lossy. Lossless compression reduces file size without throwing away any data. Lossy compression throws away non-critical or redundant data to achieve even greater savings in size. RAW and TIFF are lossless compression schemes. JPEG is a lossy compression scheme.

A feature which compresses data as it is stored in a disk file, and expands it as it is read back, resulting in more efficient use of disk space. This feature may be provided by hardware, software, or a combination of both. The software may, but need not, be part of the operating system. NTFS provides an attribute to indicate whether or not a file is compressed. Accessing compressed files requires slightly more processor time to perform the compression and expansion, but this is often compensated by the reduced data transfer time.

A process by which a file is reduced in size by removing or encoding extraneous information. A lossy compression standard, such as JPEG, cannot regenerate the original file content to the same degree of accuracy. A lossless compression standard, such as GIF, can restore all the original information.

A digital technique for reducing the information needed to represent a still image, a moving image or an audio signal without undue impact on the subjective quality of the processed material. The most important information is retained, whilst repeated or unnecessary information ("redundant" information) is discarded. Such techniques are used to reduce the capacity needed to store and/or transmit photographic, video and audio information.

Computer programs, word processor documents, digital sound and image files, digital video streams and other pieces of digital data usually contain "redundant" data, in that the same information can be represented in fewer bytes. Compression algorithms take advantage of this to reduce file size or bandwidth requirements.

A technology that reduces the size of a file. Compression programs like WinZip and UNIX compress are valuable to network users because they help save both time and bandwidth.

The action taken by a video codec in reducing the data rate required for the transmission of television signals between sites.

A method of reducing a file's size and/or of combining multiple files into one for ease of storage. Different programs are used to compress files on different computers; the program used to compress a particular file can be determined by the suffix appended to the file name. Common compression programs include BinHex (.hqx) and StuffIt (.sit) on the Macintosh, and Compress (.Z), Gzip (.gz), PKzip (.zip), Tar (.tar) and Zoo (.zoo) on PC and UNIX machines. Self-extracting archives (.sea) can be created with several of the programs, and unlike other compressed files, don't require a special program to decompress.

the process of squeezing data to eliminate redundancies and allow files to be stored in less disk space. In modems, data compression is used to provide higher transfer rates than would otherwise be possible. Ten pounds of potatoes in a five pound package.

In order to make more efficient use of transmission capacity, digital broadcast signals are reduced in size by digital compression. This has a minimum effect on the received signal quality but allows several compressed TV channels to be transmitted in the space required for one analog channel.

A method of reducing the size (compress) of web documents or graphics for faster delivery via the web.

A method of encoding/decoding signals that allows transmission (or storage) of more information than the media would otherwise be able to support. (e.g. The "Stacker" software product more than doubles the storage capacity of a PC magnetic disk drive.) Both compression and decompression require processing capacity, but with many products, the time is not noticeable.

Compression is a mathematical scheme that makes a picture file smaller by removing redundant information. There are two types of compression: lossless and lossy.

The process by which audio files are reduced without creating significant loss of data or quality. If the files are not compressed it would take too long for the listener to download the file.

Compression allows the delivery of more programs in a single channel. It is an electronic manipulation of digital data that reduces and removes redundant and/or non-critical information in the digital picture and sound without noticeably degrading picture quality. One of the compression methods is called MPEG-2.

Reducing the size of a file with a compression package, such as StuffIt Deluxe or Drop Stuff.

There are several types of compression but the idea is same. Basically compression is used to reduce the amount of bandwidth required to transmit information. Frequently, this accomplished in part by having a character(s) that represents a number of blank spaces without the need for transmitting the blanks themselves. In voice compression, various manufacturers use different techniques. ( example of voice compression product)

a process that analyzes and condenses data in files, creating a smaller file while maintaining as much quality as possible. Large files, such as graphics or sound, are often compressed using various mathematical formulas, such as JPEG and LZW for graphics or MPEG for sound.

In the specific context of digital image representation, compression refers to the process of compacting the data based on the presence of large white or black areas in common business documents, printed pages, and engineering drawings. The International Telecommunications Union Telecommunications Standards Sector digital facsimile standards contain standard one and two dimensional compression/ decompression algorithms.

Process of compacting digital data, images and text. Software algorithms search the raster image to build a greatly condensed (from a file storage perspective) format of the image.

In wireless microphones, the process of reducing the dynamic range of the audio signal by a factor of 2:1 via a logarithmic compressor for transmission. In general audio use, a circuit to reduce circuit gain by a variable amount when the output begins to exceed some preset maximum.

The process of converting data from its original format to a format that requires fewer bits. Compressed data uses less storage than uncompressed data and can be transmitted over a network more quickly. Some compressors, such as the CCITT Group 3 compressor, are called lossless compressors because they compress data in a way so that a decompressor can regenerate the original data exactly. Other compressors are called lossy compressors because they compress data in a way that prevents the original data set from being regenerated exactly.

1. n. The process of eliminating gaps, empty fields, redundancies, and unnecessary data to shorten the length of records or blocks. 2. n. Any encoding to reduce the number of bits used to represent a given message or record.

The size of a file can often be reduced considerably by using compression. This saves storage space for archiving and bandwidth when transmitting files. The drawback of saving storage space is that the file can then only be accessed by the appropriate decompression software, such as WinZip, WinRAR, or ARJ.

Large files can be reduced in size, using mathematical formulae, to make transfer speed faster and the file storage more economical (often called "quality"). Most digital cameras compress images automatically so that the user is able to take more pictures. There are two forms of compression: lossless, such as what you see in a zip file or a Stuffit file, and lossy.

Proces that converts a informationstream to a smaller amount of bits. This way it saves bandwidth and or storage space. Very common example of compression: MP3 (loss) and ZIP (lossless).

A process that uses an algorithm to reduce data volume while preserving the original data content. Compression is used to reduce the time required to send and receive data over a network, and to enable the recording of more data onto a memory card or other storage medium.

VoIP uses various levels of compression to send voice over an IP network. The highest levels are as high as 12:1. A higher compression ratio is used for smaller bandwidth connections.!-- ch_client = "coho75"; ch_width = 468; ch_height = 180; ch_color_border = "#FFFFFF"; ch_color_title = "#0066FF"; ch_color_text = "#000000"; ch_non_contextual = 1; var ch_queries = new Array('voip', 'voip phone', 'voip router', 'voip pap2', 'linksys wrt54g'); var ch_selected=Math.floor((Math.random()*ch_queries.length)); ch_query = ch_queries[ch_selected]; ch_nosearch = 1;

the act of compressing (making smaller) a digital data stream - e.g. converting from 16 bit signals to 8bit signals. Most compression schemes are "lossy", which is to say that some of the original data is discarded and cannot be reconstructed

Compression is the process by which redundancy is removed from data before transmission or storage.

Used by radio stations to reduce level differences between loud and soft parts of music. Helps in-car and transistor sound, but can be awful through a hi-fi tuner.

See Image Compression.

Reduction in the size of data in order to save space and time spent transferring the file.

refers to reducing a piece of audio's dynamic range. Too large of a dynamic range can be detrimental in areas with considerable ambient noise, ie noisy bar, or park. In these instances a large dynamic range will include some sections too quiet to hear and others too loud for comfortable listening pleasure.

The squeezing of data files into a smaller size for faster transmission through the Internet.

A technique used to reduce the number of characters transmitted, without losing data content. The transmitting modem or computer compresses the data, and the receiving computer or modem decompresses the data back to its original state.

A method of reducing the file size of an image the most common compression for images being the JPEG format. There are lossless and lossy compression algorithms where lossless does not remove data from the file and therefore has no image degradation and lossy where there is loss of data. JPEG is a lossy compression algorithm.

Reducing the amount of data required to recreate an original file or graphic. Compression is frequently used to reduce the transmission time of media and files across the Web.

A process that reduces the file size for processing, storage, transmission, and display. Compression may be lossless (e.g., CCITT) or lossy (JPEG). The quality of the image may be affected by the compression techniques used and the level of compression applied.

Using mathematical manipulation of data to fit the same amount of information into a smaller digital package. VoIP implementations usually use some form of compression in order to free up bandwidth for data traffic or other voice traffic. Back

Any of several methods for reducing the bandwidth required for carrying a signal. Compression can be "lossy" (less important information is removed) or "lossless" (at the receiving end, the signal can be reconstituted as a bit-for-bit copy of the original).

Process of compacting digital data, images and text. Most digital cameras compress images automatically so that the user is able to take more pictures.

the reduction in size of data in order to save space - for example when storing on a computer - or in transmission time (such as when streaming a video on a website).

Reduction of bandwidth needed to transmit video or audio which increases the capacity of a satellite transponder.

Compression (such as Dolby Digital or MP3), enables faster, lower-bandwidth transmission or delivery of audio or video. There are essentially two types of compression: loss-less and lossy. Loss-less compression, such as DVD-Audio's Meridian Loss-less Packing (MLP), requires an encoder and decoder and retrieves 100 percent of the original information. Lossy compression, such as that used by the MP3 format, discards up to 90 percent of the original information, and then applies psychoacoustic calculations to minimize the audible degradation to the audio signal. Audiophiles and purists strongly prefer lossless compression techniques for their superior sound quality; others would never want to surrender the convenience (such as 5.1-channel surround sound in movie theaters) delivered by lossy compression techniques.

Compression is the process used to make computer files smaller. Files on Web sites are often compressed so that they take up less space and can be transmitted to other computers faster. There are numerous computer programs that are designed to compress files. In order to use a compressed file, you must have a copy of the program that was used for the compression. You'll have to use that program to "decompress" the file before you can use it.

1) In relation to a cars engine, it is the ratio which the displacement volume reduces upon the compression stroke, 2) In relation to shock dampening, it is the movement which compresses the internal hydraulic oil or gas volume.

Compression is a technique used to make a file or a data stream smaller for faster transmission and/or require less storage space. The major compression programs are PKZIP, WinZip, Stuffit, and gnu zip.

Technique used to minimize the number of bits required to express the information in a data file or stream. Used to improve network performance and to maximize use of storage facilities on computers.

Reduction of the size of a computer file so that it will travel quickly over the Internet.

Reducing the amount of data units required to represent information, necessary especially when transmitting video. Decompression reverses the result of compression.

A method used in graphics programs to shrink the size of image files. Jpegs use compression to shrink down file sizes, and TIFs have the option to compress using LZW for example.

Compression refers to the reduction of the size of digital data files by removing redundant and/or non-critical information so that the original signal occupies less space in the transmission channel or storage device.

A special format for a file that minimises the storage space required. Image compression is the use of a compression technique to reduce the size of a graphics file, which consumes inordinate amounts of disk space. There are two types of compression, lossy or lossless

Reducing file size for storage in a lossy (JPEG) or lossless (RAW) manner.

1. The process of electronically processing a video picture to make it use less storage or to allow more video to be sent down a transmission channel. 2. The process of removing picture data to decrease the size of a video image. MPEG-2 incorporates compression.

Reducing the representation of the information, but not the information itself. Reducing the bandwidth or bits necessary to encode information. compression saves transmission time or capacity and saves storage space on storage devices such as hard disks. Data decompression is used to restore the data to its normal form for display.

Squashing data to reduce file sizes, so using less space for storage, or to enable quicker transfer of files. JPEG, GIF, PNG, are some formats used.

Reducing digicam pictures file sizes in the camera after they're shot, usually according to Joint Photographic Experts Group [JPEG] specifications so more images can be stored on the memory card. The degree of compression can be user specified on many models depending on the ultimate quality needed.

Cutting down on the size of a file.

A process in digital photography that reduces the size of an image file by eliminating some image data. A user may compress an image file if needing to store multiple images on his memory card. However, if wanting to print out the image, compression may lead to some detail being lost from the photo.

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.

Refers to the reduction in the number of bits required to store or transmit data. The method adopted for digital television is called MPEG-2.

Reducing the size of a file for transfer to computer. The lower the compression ratio the better the quality but also the larger the file size and the more powerful the computer system required. As a guide 1Gb of hard disk space would record 30 seconds of uncompressed broadcast quality video, 2 minutes of Digital Betacam or 4 minutes of consumer DV.

Compressing a file reduces its size (in kilobytes). This speeds up transmission across a network and reduces storage requirements. Compressed files must be uncompressed before they're used. There are many different compression algorithms. Compressed files can be recognized by certain extensions such as .zip, .jpg, .arc, or .mpg.

A software process that reduces the size of a file (e.g., an image) for more efficient storage or transfer.

Storing image data in a way that results in a reduction in file size. Compressing data is especially important when you want to publish images to the web or e-mail. GIF JPEG s, and PNG s are all common compressed file formats. Compression can be lossy or lossless. Lossless compression doesn't lose any image data. GIF s and PNG s are lossless file formats (although GIFs lose color depth). Lossy compression results in the loss of image data every time the image is saved. JPEG is a lossy file format.

A reduction of dynamic range of a signal by use of a compressor. Compression is frequently used to control the peaks of an unruly signal, or to raise the overall average sound level without introducing too much noise or distortion. This technique is commonly used in the production of television commercials to create the illusion that they are louder than the surrounding show. (in fact they are not, but compression techniques make it seem that way) condenser

Decreasing the size of an image file for storage with little or no distortion of the image data and quality. Compressed data must be decoded at the receiving end of the communications path in order to extract the original information. With data compression, the sending modem compresses the data into a compact form and the receiving modem decompresses the data back to its original form. This process saves time and money.

The intentional reduction in dynamic range to increase sustain and/or add punchiness, caused by a the use of a compressor/limiter.

The removal of redundancy in a data file or signal to reduce data size.

Reducing the size of a file to save storage space. With color images this can cause a reduction in quality.

A feature of some amps and effects that reduces the signal's dynamic range by making loud sounds quieter and quiet sounds louder. See Limiter.

The removal of redundant or unnecessary information from a set of data.

A means of compacting information for more efficient transmission or storage, used in such areas as data communication, database management systems, and facsimile transmission.

using a mathematical formula to reduce the size of an image file. The more an image is compressed, the greater the image degradation.

Decreasing the size of a file for storage for transfer with no loss of image data or quality. Software such as Stuffit, DiskDoubler or Compact Pro, are commonly used to compress files.

Any object may be individually compressed by highlighting it, selecting Object-Compression and choosing the desired compressor. Sorenson or Indeo 4.x is recommended for video, Qualcomm for narratoin, Qdesign for music and JPEG for photos. You must also choose the desired compressor when rendering your scene, if you choose to render your scene. Sorenson or Indeo 4.x is recommended if your scene has video and photos. For scenes comprised of graphics and animation, the Animation compressor is recommended.

The process of compressing audio and video signals for the purposes of streaming. This can be done using hardware or software. The streaming files are decompressed at the user's end using a 'player'.

The ability to reduce the size of a file in kilobytes by prossessing with a utility application. Popular compression formats for the web are .ZIP (typically for Windows users) and .SIT (originally the standard Macintosh format but now also available for Windows). Most files available for downloading on the Internet are compressed to reduce the file size and thus the time required for transfer. Various graphics formats are, by the nature of their specification, already compressed such as JPEG, GIF, and PNG formats.

Exploiting the natural redundancy in an image file to store it in an equivalent but smaller format. Compression is a trade-off: image files are smaller, but they require more time to create during a backup (restores are also slightly slower as well). However, compressed snapshots are faster when transferring over a network.

The reduction of data to reduce file size for storage or transmission.

Reducing the size of a file so that it becomes cheaper to store and transmit. Compression techniques are used in files on the Internet to speed up download times

The process of manipulating video signals so that they requires less storage on a computer hard drive. It takes about 12 gigabytes to store one hour of broadcast quality analog or high-resolution digital video. Compression can reduce this size dramatically, but this can result in an unacceptable deterioration of picture quality. Compression can be performed by run length encoding similar values (i.e. a large number of consecutive pixels in a frame with the same color), reducing the frame size, reducing the number of frames per second (normally 30), reducing color content, reducing sharpness, or a combination of all of the above. For most video editing applications that has to produce an acceptable quality video tape as the end product, virtually no compression of the input video source is acceptable.

Compression is a term for decreasing the original file size of an image. A mathematical algorithm is used to represent the image in a different way so that the file size will be smaller. For example: if the image has 5 black pixels in a row we can represent this as BBBBB or 5B. The latter version will decrease the file size of the image.

(15) Images usually contain large amount of redundant data that can be reduced by a process known as compression. The process can be either lossless (prefect image reconstruction) or lossy (the reconstructed image may be visually different from the original). The DICOM standard supports both JPEG and JPEG2000 standards.

Expressed in percent, it is a measure of how much the materials thickness is reduced under a given compressive stress.

Technique whereby computer files are compressed to a smaller size without data being lost in the process. Compression reduces the space occupied by a file on disk and increases the speed with which you can upload or download files.

Reduces the size of a file through one of several compression algorithms. Compression of a file can occur before encryption to shrink the size of the encrypted file.

A technology used to make files smaller for faster transmission or to take up less space.  A compressed file has to be uncompressed to be used.

A technique for reducing the number of bits in a digital signal, by reducing the quality of the record (keeping only what the eye and ear can perceive) or by reducing redundancy (keeping only what changes from one image to the next, leaving the background unchanged). One example is MPEG 2.

Reduction of the amount of data required to recreate an original file, graphic or film. Compression is used to reduce the transmission time of media and application files.

In multimedia, this term means the compression of a file. Commonly referred to as encoding.

Process by which redundancy is eliminated from a plain message.

In this context means to make the resulting image file smaller. Both non-lossy (decompressing the image returns it to exactly the original quality; e.g. used for text and fax) or lossy (when decompressing the image it's only visibly identical to the original; typically used for color images that otherwise get prohibitively large)

Reducing the size of a file. Compression can either be ‘lossless’ or ‘lossy’. Documents such as Word files are compressed ‘losslessly so that no information is lost. Multimedia files such as video can have lossy compression applied, as generally our compressed video file doesn’t need to be identical, bit-for-bit, to the original.

Reductions in tariffs where high tariffs are reduced by a greater proportion than low tariffs. Compression results in a decrease in tariff dispersion and the tariff average.

Many files can be compressed or zipped so that they are physically smaller in size. This is advantageous because you will be able to download the file much faster. Software such as WinZip or PKZip is typically required to decompress or unzip a compressed file, although in some cases you may receive a special "self-extracting" compressed file that does not require any additional software to open.

a process used to reduce image file size. Image-compression algorithms may be either information-preserving, a.k.a. lossless, or non-information-preserving, known as lossy.

A method of electronically reducing the number of bits required to store or transmit data within a specified time or space. The video industry uses several types of compression methods but the method adopted for DTV is called MPEG2.

To decrease the size of a computer file, programs can be run that remove unnecessary information and in so doing, reduce the overall size of the file.

A method of fitting information into less space so that it takes less time to travel from one computer to another

The process of reducing the amount of data that is transmitted or stored by a system. Compression can either be lossy or loss-less. The former does not allow full reconstruction of the original data but usually gives more efficient compression.

An algorithm which runs via software or hardware reducing a document's file size. Compression is used to reduce storage space.

is a way to shrink files or decrease the number of characters sent over a communications connection. Some file compression programs include compress, zip, gzip, and bzip2.

By compressing data, or making it smaller, your computer uses less memory to store information. Compressed data takes less bandwidth and allows faster transmission.

Reduction of the bit-rate required for the transmission of a particular digital signal, achieved by the identification and elimination of redundant information, such as repetition of information contained in a previous signal.

Reduction in gain at one level of a video signal with respect to the gain at another level of the same signal.

Files are compressed using a variety of methods. Reducing the size of a file in this way means that it occupies less disk space and takes less time to download. Compression is often used in conjunction with packing. There is a userguide available on unpacking software.

the process of making something (i.e. video or audio data) smaller than its source - can be lossy or lossless.

Electronically reduces the number of bits needed to store or transmit data within a specified time or space. Several types of compression methods are used buy the industry, but the method adopted for DTV is called "MPEG2." Ten or more full-range channels of programming and data can be compressed into the same space required by a single analog channel.

(See Data Compression)

Storing data in a format that requires less space than usual. Compressing a computer file reduces its size. For example, the JPEG image format uses compression to reduce the size of the image file.

A method of packing data in order to save disk storage space or download time. JPEG's and GIF's are generally compressed graphics files. Compression is a technique to make a file or a data stream smaller for faster transmission or to take up less storage space.

The coding of data to save storage space or transmission time

Can mean either: data compression, where some existing data (such as a sound file) is reduced in size (such as in mpeg3 files); or audio compression, where the dynamic range of a sound signal is reduced.

The process of reducing the dynamic range of a given analogue audio program by making the loud parts quieter and the quiet parts louder.

The process of packing digital data, such as computer files, more efficiently for the purpose of storage or transmission. Commonly referred to as 'stuffing' or 'zipping' a file.

A process of temporarily or permanently reducing audio data for more efficient storage or transmission. A temporary reduction in file size is called 'non-lossy' compression, and no information is lost. A permanent reduction in file size (such as with mp3 files) is called 'lossy' compression, and involves discarding (supposedly) unnecessary information which is irretrievably lost.

Any of various ways of squeezing a file down to a smaller size. Compressed files save you time, as they transfer much more quickly. Software that compresses files, such as the shareware utility PKZIP.EXE or StuffIt, looks for repetition in the bytes comprising a file and assigns various codes that represent the repeated bytes — without storing the actual bytes in the file's compressed version. Another form of compression, disk compression, refers to software that compresses all data on a given hard disk.

reducing filesize by lossy or lossless techniques

A way of processing digital images or sound so that they take up less space on a disk, less bandwidth for a transmission, or less time to transfer. Image compression is used in digital cinema so file sizes remain manageable for mastering, distributing, loading, and projecting. The image must be uncompressed in the theatre before it can be displayed.

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 colour, 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 mathematical method of reducing the amount of digital information needed to re-create a television picture or frame. Content protection (CP) Cryptographic and design techniques used to limit how data flows within a receiving device and between devices. Generally this is used to restrict copying of copyright protected material.

A method according to which data is stored in such a format as to require less space than it had taken before.

A method that reduces the size of digital data so that it can be downloaded or stored more quickly.

The bigger a file (image, sound, text, etc) the longer it takes to send or receive. Compression is a way of making files smaller. Many different techniques are used to compress computer files. When a compressed file reaches its destination it must be "expanded". Some compression techniques like Zip and Stuffit are "lossless", meaning that expanded file is identical to its original. Other compression techniques sacrifice detail to be able to compress the file as much as possible. This type of compression is used mainly for sound, image and video files..

The reduction in size of an image file. See also lossy and non-lossy.

Reduction of the amount of information to accommodate cost-effective digital transmission to another codec. For example, sub-T1 video codecs compress analog signals (roughly equivalent to 90,000 kilobits per second) to digital rates varying from 56 to 1,544 kilobits per second. POTS-based video compression can transmit at 33.6 kilobits per second or lower.

Any technology that reduces large files to a manageable size for easy transmission (or download). The most popular form of compression is Zip.

An image processing method of saving valuable disk and memory space by reducing the amount of space required to save a digital image. The graphics data is rewritten so that it is represented by a smaller set of data. Not to be confused with encoding. See also lossless and lossy compression.

Volume reduction of the chain of bits constituting an image through a coding process in order to speed up transmission or reduce memory space requirements.

A technique used to take data and render it a smaller size. This is usefull when transmitting files over the Internet so that they do not take as long to send. The most common format of compression on the Internet is zipping. This is most commonly performed with a utility called Winzip.

1. Describes a method used by radio stations to minimise the audible difference between soft and loud parts of a track. 2. Refers to a digital treatment of music to allow greater amounts to be stored or broadcast within restricted space or bandwidth, usually by the removal of certain frequencies that are deemed to be inaudible.

The process of encoding information using fewer bits or amounts of data in order to store or transmit the data in a faster and more efficient form.

The process of removing redundancies in digital data to reduce the amount that must be stored or transmitted. Lossless compression removes only enough redundancy so that the original data can be recreated exactly as it was. Lossy compression sacrifices additional data to achieve greater compression.

The act of encoding data into a smaller representation than its original form. See RLE for a simple example.

The black art of reducing the amount of space needed to store a digital image onto a digital media such as a hard disc or CD-Rom. Compression can be broken into two types: lossless, in which the true integrity of the image is maintained, and lossy, in which the original image is altered on compression and data is thrown away, sacrificing image quality for a high compression ratio.

Data that is transferred between your workstation and the server can be compressed. Data compression reduces the amount of traffic on the network. However, the time to compress and decompress the data is added to the transfer time.

Software algorithms that reduce the number of binary digits in a digital file by eliminating redundant information. The resulting files are reduced in size. (also see JPEG, LZW and RLE)

Software or hardware process that shrinks data files so that they occupy less storage space, and can be transmitted faster and easier.

The action taken by some video codecs to reduce the data rate (bandwidth) required for the transmission of videoconferencing signals between sites. Although a very complex task, the nature of the process is the elimination of all information which repeats (does not change) from one frame of video to the next. Consequently, slow fluid movements can be transmitted nicely via a compressed video system, while rapid motion will cause the received picture to break up or "tile" into squares on the screen.

Digital images are composed of millions of pixels (see pixel). Each pixel contains a value for Red, Green and Blue (RGB). So, the size of a 5MP image is (HxV). Multiplying that to get the pixels of X then multiply that by 3

Any of several techniques that reduce the number of bits required to represent information in data transmission or storage. It can be used to squeeze more information in a given space or bandwidth (eg sending several TV channels in the space previously occupied by one), or to send the same information more quickly.

The reduction in the size of data in order to save space or transmission time. Compression is performed by a program, which uses an algorithm or formula to determine how best to compress and decompress the data.

Method of compacting data into a smaller number of bits for more efficient transmission or storage.

When storing information in digital form, it is often possible reduce the amount of space required by exploiting regular patterns in the data. For example, documents written in English frequently contain "the". A compression system might notice this fact and represent the complete word "the" (24 bits) with a shorter code. A picture containing your friend's face plus a lot of blue sky could be compressed if the upper region were described as "a lot of blue sky". All popular Web image, video, and sound formats incorporate compression.

is a process that reduces the number of bytes required to define a document in order to save disk space or transmission time. Compression is achieved by replacing commonly occurring sequences of pixels with shorter codes. Some compression methods--like JPEG, throw away some data seeking only to preserve the appearance of the image. Others-like Group-IV, preserve all of the original information.

the process of fitting a large file into a space that is many times smaller. In the case of video, the method used for the DTV standard is MPEG-2, which can take four or more full-range channels of programming and data and compress them into the same space currently occupied by a single analog channel.

1) Compression of an audio signal is a reduction of its dynamic range by reducing the highest levels, and in some cases increasing simultaneously the lowest levels. Most recorded music is compressed to accomodate entry-levels playback systems. Movie soundtracks are not or much less compressed as they are inteded to be reproduced by professional playback systems.

The shrinking of computer files so that the same information can be stored in less memory.

the technology used to reduce a file size by eliminating data that is not likely to be noticed by the viewer. Digital Rights Management (DRM): a copyright protection technology for digital media whose purpose is to prevent illegal distribution of paid content over the Internet. Digital Rights Management (DRM): a copyright protection technology for digital media whose purpose is to prevent illegal distribution of paid content over the Internet.

data compression is a process by which digital information can be reduced in volume so that it takes up less space on a storage device or can be transmitted over a communications link more quickly than the uncompressed information. There are many types of data compression, some of which result in the loss of some information ("lossy" compression) and thus reduced quality of reproduction. These are often used for the storage and transmission of graphical, video or audio information ( MP3 is an example of a lossy compression standard for audio information.)

The process of saving storage space by eliminating empty fields or unnecessary data in a file. In Tivoli Storage Manager, compression can occur at a workstation before files are backed up or archived to server storage. On some types of tape drives, hardware compression can be used.

A technique for reducing the space taken up by data in transmission or storage.

Means by which amount of bandwidth needed to transmit video or audio is reduced, thus increasing the capacity of a satellite transponder.

You can compress a digital movie to make it fit on a CD or to put it on a Web page, but there is a trade-off between the size of the image and its quality. Try different compression rates and see which looks the best. Your goal is to get the minimum size that looks good.

An encoding process that reduces the data in a media file, generally by throwing away information the eye can't see or the ear can't discern. Compression codecs include DV, Windows Media, MPEG-2, MP3, Ogg Vorbis, Ogg Theora, AAC, AC-3 (Dolby Digital), DivX and Xvid.

A method of reducing file size by saving files to specific file formats (e.g. JPEG and GIF).

Takes something large and makes it smaller. Compression generally comes in two forms, lossy and lossless. Lossy compression is best used on graphics files and sound files. It crunches down the data at a much higher ratio, at the expense of having an image or a sound that isn't quite the same as before it was compressed. In the best scenario the data takes up less space, but the person viewing the graphic or listening to the sound file will not be able to tell. Lossless compression squeezes data down so that at some later date it can be uncompressed and returned to its exact structure. Lossless compression is best used on data files and programs.

the size of your brain after spending too many hours in chat rooms.

Reduces the file size of an image. Use compression if you are transmitting images to a station via a slow connection. Lossy compression reduces image quality slightly; for non-diagnostic purposes, the loss is minimal.

Methods of reducing size of files or the bandwidth of transmittted information without (normally) altering the informational content. Files on anonymous ftp hosts are often stored in various compressed formats to reduce the storage space required. Text and many types of graphics can be compressed considerably in size.

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.

CD music is recorded in PCM which is non compressed and therefore requires more storage space. Compression formats such as MP3, ATRAC, AAC and WMA are used to reduce file size and increase the amount of music that can be stored.

Without compression, digital TV in the United States would not be possible. This process reduces the amount of data required to represent a video or audio signal. Basically, using complicated mathematical equations you can squeeze more information into the same amount of space without a noticeable difference in the picture quality.

A function used to conserve storage space by eliminating redundancies in data. Such lossless compression ratios can vary from 1:1 to as high as 6 or 7:1.

This occurs when information is reduced in size but all of the necessary information is retained.

An algorithm or scheme used to compress or shrink a file. A file in compressed form must first be uncompressed or transformed before it can be read, displayed, or used. Files available through anonymous FTP are often stored in compressed form, and must be treated as binary files.

Compression is the process that shrinks a photo's file size. The majority of digital cameras take photos as compressed JPEG files, which means more images can be stored on the memory card. Compression makes for speedier saving and downloading of pictures and also means it is easier to email them. Because compression results in a small amount of data loss, it is best to buy a camera which takes uncompressed photos if you want only the sharpest possible results.

Reducing the amount of bandwidth needed to carry audio and/or video signals.

A process that is applied to files in order to make them smaller so that they take less time to transfer over the Internet.

Compression is a technique that reduces the quantity of bandwidth or bits required to encode a block of information so that it occupies less space on a transmission channel or storage device and a fundamental concept of video communications.()

Digital data can be compressed by encoding repeatable patterns of binary 0's and 1's. Compression depends entirely on the type of file and compression algorithm used, and can be the result of a software algorithm or hardware circuitry. The more patterns that can be found, the more that data can be compressed. Text can generally be compressed to about 40% of its original size, and graphics files from 20% to 90%.

communications: 1. Software that reduces the number of bytes in a file by means of clever algorithms which (among other things) detect patterns and substitute special symbols for oft-repeated groups of characters. At first they were used for packing info for transmission to others via phone lines or floppy disks. With faster processors, the new trend is to compress files each time they are saved to your hard drive and decompress them "on the fly" when they are called for. Examples of the former are Stuffit, CompactPro and DiskDoubler; examples of the latter are Stacker and AutoDoubler. 2. Image compression software that may employ shortcuts which result in a loss of some of the data but which enable immensely large files such as sound and video to be handled. 3. Data compression by modem hardware that allows more information transfer in a shorter time frame.

The shrinking of digital information to achieve smaller file size. One would compress information to allow for faster upload/download times or to fit on a certain size disk.

The process of condensing a file, video, or animation using special hardware, software, or both so that it requires less storage space.

A software function which uses an algorithm to remove redunant code within a file to reduce its overall storage size without losing information.

Making a file smaller by condensing data. It is used for faster transfer and/or storage of files.

The process of reducing the information content of a signal so that it occupies less space on a transmission channel or storage device. Compression is particularly important for the transmission of multimedia content such as graphics, audio and video over the limited bandwidth of the Internet. Examples of commonly used compression formats are JPEG (for images) and MP3 (for audio).

compression is used at anywhere from 1:1 to 12:1 ratios in VOIP applications to consume less bandwidth and leave more for data or other voice/fax communications. The voice quality may decrease with increased compression ratios.

The process of making a computer file smaller so it can be copied more quickly between computers. Compressed files must be decompressed on the receiving computer before they can be used. See Chapter 7.

Reducing the the size of a file so it can be stored in a smaller space. The most commonly found compression utility is WinZip, which creates .ZIP files, which store many other files in a far smaller space.

The process of shrinking one or more files into an archive by use of a compression algorithm. This, when used properly, should produce an archive smaller in size than the original file or files.

A technique for making files smaller so that they can be downloaded more quickly.

The re-encoding of data to make the file size smaller. Most image file formats use compression because image files tend to be large and consume large amounts of disk space and transmission time over networks.

Reducing the amount of visual information sent in a signal by only transmitting changes in action.

The process of reducing the size of digital information, usually by throwing out redundant information, or calculating.

A method of "shrinking" a file to be downloaded in order to reduce transmission time. Most downloadable files on the Internet are compressed and require a special utility in order to be restored to their original size after downloading.

the process of compacting or reducing the amount of data available for use or reproduction such as the density range.

Compression (data) Compression Driver

Compression Techniques are used in Digital CCTV to reduce the file sizes of recorded video images. Typical compression formats used for video are: MJPEG, MPEG-4 & H.264.

A method of making data smaller so that more of it can be transmitted in less time. Uses Jpeg, Mpeg, Gif, Tif, and Zip files.

The technique of reducing the amount of data needed to represent a video or audio signal (by reducing the size of digital data files). Compression makes it possible to transmit DTV signals containing high-quality pictures, high-quality sound and data using the same amount of bandwidth (spectrum) as the existing analog television service. Compression can be accomplished in two ways: by removing redundant information in the files (called "lossless" compression) or by removing non-critical data (called "lossy" compression). In the United States, the DTV signal is reduced to 19.4 million bits per second.

The operation of compacting a graphic or other type of file, either by removing redundancies (as in the case of .GIF files) or by approximating tonal or colour information (.JGP) files.

In one context, it refers to algorithms for shrinking the storage space required for files stored on discs. 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.

An encoding process that reduces the digital data in a video frame, typically from nearly one megabyte to 300 kilobytes or less. This is accomplished by throwing away information the eye can't see and/or redundant information in areas of the video frame that do not change. JPEG, Motion-JPEG, MPEG, DV, Indeo, Fractal and Wavelet are all compression schemes.

The compression of digital files in a format that requires less storage space. Compression techniques are distinguished from each other by whether they remove detail and color from the image. Lossless techniques compress image data without removing detail; lossy techniques compress images by removing some detail. Joint Photographic Experts Group (JPEG) is a lossy compression technique supported by JPEG, PDF, and PostScript language file formats. PowerShot digital cameras store their images in JPEG format, which provides the best results with continuous-tone images, such as photographs, when the size of the file is an important factor.

The process of removing redundancies, or repetitions, in digital data to reduce the amount of information, making it easier to be transmitted or stored.

Compression enables devices to transmit the same amount of data in fewer bits .

In audio, compression means to reduce the dynamic range of a signal. Compression may be intentional or one of the effects of a system that is driven to overload.

Compression is the reduction of the size of a file. A compression program will save a file differently so that it takes up less memory and can be downloaded or sent over the Internet more quickly. Common compression programs include WinZip for the PC and Alladin Expander's Stuffit for the Macintosh. Several files that are archived into one file may or may not be compressed as well. Source: TechSoup.org

To reduce the size of a file by encoding the data. This is useful for storing files and reducing transfer times, meaning files can be sent over the net, or to another disk, more quickly.

Squeezing a file (especially an image) into a more efficient form to reduce the amount of storage space required.

A measure of the dynamic range of a signal. A compressed (or reduced) dynamic range may be required of some broadcast signals to prevent overload during some radio transmissions. However it is anathema to high fidelity reproduction, since low level signals are raised and high level signals lowered so that the full power and subtlety of the sound is lost.

The technique of reducing the number of bits required to represent information during data transmission or storage. Particularly required where image and multimedia is used.

mathematic algorithms to store large amounts of digital data in a fairly small amount of space

Reducing the size of data to be stored or transmitted in order to save transmission time, capacity, or storage space. Some software programs accomplish this by stripping color graphics and other "non-essential" data identifiers from the data stream.

What is file compression on the web

An algorithm that is applied to a digital image to reduce its file size. Compression can be either Lossy or Lossless

A way to manipulate data using either hardware or software so that it takes up less space on the hard drive. It is also used by Modems as a means to transfer data more rapidly over telephone lines. A common software compression/decompression utility is PKZIP.

Compression is used to reduce the size of the stream in question so that it can be more easily transmitted and received by listeners or viewers connected to the Internet.

Process of reducing the size of a digital image using software algorithms. This process can remove details from an image.

Reduction of the size of digital data files by removing redundant and/or non-critical information ("data" being the elements of video, audio and other "information"). Digital TV in the U.S. would not be possible without compression.

A software process of storing a digital file, such as a sound or a video, in a compressed form to save storage space or speed up its transmission time over a network.

Reducing the amount of bandwidth needed to transmit video or audio by digitizing an analog signal, thus increasing the ability to load multiple services on a satellite transponder.

the process by which data is compressed into a form that minimizes the space required to store or transmit it.

Digital video pictures can be compressed with a number of techniques. These include, JPEG, M-PEG, MPEG and Wavelet.

Method for shrinking down data to fit in a smaller space than it would normally occupy.

Reducing the bandwidth or number of bits needed to encode information or encode a signal, typically by eliminating likng strings of identical bits or bits that do not change in successive sampling intervals.

Also called zipping. The process of squeezing data to eliminate redundancies and allow files to be stored in less disc space and transmitted more compactly. The most commonly used compression application is WinZip.

The conversion of digital data, typically video and audio, into a more compact form by using complicated algorithms. The data is decompressed at the receiving end.

The removal of air from melting feedstock by applying heat and pressure. In a reciprocating screw molding operation this is achieved by tapering the screw to reduce the space for the feedstock during metering toward the screw tip.

The processes of reducing the amount of information required to record or transmit images and/or audio. The final quality will depend on the amount of compression applied – the lower the compression [higher data rate] used the better the final quality. Higher compression [lower data rate] will result in poorer quality.

Compression is a handy process which involves automatically turning down the loud bits of audio signals, stopping them all overloading and distorting everything and causing havoc generally. Before automatic compressors were invented, studios had to employ teams of specially trained monkeys to ‘ride the faders’ and turn down any excessively loud bits manually.

A method of compacting data for storage or transfer.

A technique to reduce the amount of data to be transmitted that reduces the amount of bandwidth needed to transmit video or audio, thus increasing the capacity of a satellite transponder.

Reduction in the size of data in order to save space and transmission time, vital if streaming a movie over the web.

A technique for reducing the size of files, commonly used to speed transmission and download times.

The process of storing data in a way that requires less storage space. For example MPEGS compress video data.

By compressing data, your computer uses less memory to store information.  When data is compressed and sent over the Web, it takes up less bandwidth and allows faster and more efficient downloading.

The reduction of data to reduce the size of a file; compression can be lossy (for example, JPEG images) or lossless (for instance, TIFF images); lossy images have a greatly reduced file size.

A mathematical algorithm that reduces the file size of an image file by "throwing away" data that usually can't be seen by the naked eye. Too much compression can ruin an image

Data may be compressed to reduce storage (memory) space or to reduce transmission times (reducing the amount of data). Well known compression standards include JPEG and MPEG.

an algorithm that significantly reduces file sizes by removing redundant data. Common compression schemes include JPEG, LZW, and RLE.

Data Compression is a process that reduces the size of a file by eliminating any redundant data. Many different schemes of compression exist. Compressing a file saves storage space and allows for faster transmission of data. Some more popular compression programs are WinZIP for the PC and Stuffit for Macintosh users. Decompression is the reverse process to restore data to its original form.

a technology that reduces the size of a file. WinZip and UNIX are examples of compression programs, which are valuable to network users because they help save both time and bandwidth.

A method by which data, images, and text can be stored using less disk space. After a file is compressed into a smaller file size, it will require less time to transmit over a network.

A reduction of an audio signal’s dynamic range or of the size of digital audio or video data files. Not all compression is bad: dynamics can be uncomfortably wide (soft sounds get lost in room noise, while loud sounds are deafening), and digital files can be much bigger than they need to be to convey high-fidelity audio and video.

VoIP uses various compression ratios, the highest approximately 12:1. Compression varies according to available bandwidth.

a computer process using algorithms that reduces the size of electronic documents so they occupy less digital storage space

The process by which redundancy is removed from data before transmission or storage. In lossless compression the original data can be reconstructed precisely. In lossy compression some information is discarded so that the reconstructed data is not identical to the original.

Process that digitally reduces the number of bits in an image or file, thereby decreasing the required storage space. However, with digital images, the greater the degree of compression, the greater the loss of detail. JPEG is the most commonly-used file format for storing compressed data.

A format that makes large files significantly smaller for storage.

The act of making a file or data stream smaller.

Large files often contain enough redundancy that clever algorithms (such as the UNIX utility compress) can encode the same data in a form that uses up less memory and can be transmitted more quickly.

Process by which files are reduced in size by the removal of redundant or less important data.

Compression is the digital process of breaking down the analog parts of an image into smaller digital parts, so it doesn't take up as much data space, and allows more images to be stored.

A technique used to encode information so that it fits in a smaller package for easy storage or transmission. In other words, "we have to compress this audio or video file so it will download faster on a low bandwidth connection. Yes, the quality will be terrible but we have no choice."

the process by which computer data is rewritten to make the original file size smaller

In color management, gamut compression refers to the ability of software to reduce the range of colors in an image to that which can be reproduced on an output device. In image processing, file compression refers to reducing the size of a file through and alternate encoding process.

In the specific context of digital image representation, refers to the process of compacting the data based on the presence of large white or black areas in common business documents, printed pages, and engineering drawings. The International Telegraph and Telephone Consultative Committee ( CCITT) digital facsimile standards contain standard one- and two-dimensional compression/decompression algorithms. This technology is used to speed up transmission and to lower storage requirement.

A process performed on a digitally encoded signal or data file to reduce amount of bits to be transmitted or stored.

is the reduction of image file size for processing, storage, and transmission. The quality of the image may be affected by the compression techniques used and the level of compression applied. Decompression is the process of retrieving compressed data and reassembling it so that it resembles its original form before compression. There are two types of compression

The process of condensing files or data to be transferred in order to speed up downloading.

Photos stored as "JPEG" format can be compressed to save space but at a loss of quality. The more you try to save space, the more quality you lose. Experiment with different settings by all means if you wish. We find 85% gives a pretty good compromise.

A process that reduces the size of a file. Compressed files take up less space on computers and can be transferred more quickly.

What the camera does to make an image file smaller, hence faster to download or send via e-mail. Many cameras let you choose the level of compression, often with abbreviations such as HQ (high quality, or highly compressed) and SHQ (super high quality, or lightly compressed).

The running of a data set through an algorithm that reduces the space required to store or the bandwidth required to transmit the data set. Compare with companding and expansion.

a software process by which images or files are condensed so that they occupy less storage space. Compressed files also transmit faster over the internet due to their reduced file size.

Reducing the size of a data set to lower the bandwidth or space required for transmission or storage.

The shrinking and expanding of a file so it will transport more rapidly.

The reduction in the size of data in order to save space or transmission time. Compression is performed by a program that uses an algorithm or formula to determine how best to abbreviate the data in a way that can be faithfully distributed.

The process of reducing file size by the removal of redundant or less significant data.

A generic term to describe one of the numerous processes whereby data or details are removed from an image to make the overall image size smaller.

The process of scanning a file a reducing its size by eliminating duplicate words of phrases and replacing them with codes for later decompression.

The process of reducing the range of audio signals in a recording, thus decreasing the size of the file. MP3 compression eliminates frequencies inaudible to the human ear, though a bit rate below 128kbps produces a discernible loss in sound quality. See also: Bit Rate, MP3.

Algorithm that minimizes the redundancy in the signal to be transmitted.

A technique used to increase the number of data bits per second sent over a data link or the available space on a storage device by replacing often-repeated characters, strings, and command sequences with a space-saving code.

a mathematical interpretation or algorithm of an image. An algorithm is created to condense images by not saving all the bytes and bits. Compression (making files smaller) is achieved by software or hardware (compression boards) or both.

An algorithm applied to a digital image to reduce its file size. Compression techniques are distinguished by whether they remove detail and colour from the image. Lossless techniques compress image data without removing detail; lossy techniques compress images by removing detail.

Compression is the process of compacting digital images using software algorithms to subtract data. Smaller image files are easier to store and manage.

A term used to denote reducing the amount of bandwidth needed to transmit video or audio, thus increasing the capacity of a satellite transponder.

Data files available for upload and download are often compressed in order to save space and reduce transfer times. Typical file extensions for compressed files include .zip (DOS/Windows) and .tar (UNIX). See Also: Download, PKZIP, Upload

Compression is a method of removing unneeded data to make a file smaller without losing any data, or in the case of a photographic file, image quality. There are many techniques and technologies for compressing graphics and how well each works depends on what is more important to you: file size or image quality.

Compressed files are easier to transmit and store on your computer, as they are smaller in file size. In order to compress files, audio codecs remove inaudible or redundant data in music files.

A way of making files smaller, either to fit into restricted storage space or to speed up transmission over the Internet. Popular compression standards include JPEG and GIF for pictures, MP3 for music files, MPEG for movies, and zip for just about everything else.

A "packing" or reduction in the amount of data being transmitted, using a mathematical formula similar to averaging, in order to optimize the transmission of data from the spacecraft. Once received, these data are "unpacked" (decompressed) to reconstruct the full image. However, if noise (see Radiation) is present it may cause incorrect values for the picture elements it was averaged with, which also affects the resulting image.

The coding of data to reduce file size or the bit rate of a stream. Content that has been compressed must be decompressed for playback. A codec contains the algorithms for compressing and decompressing audio and video.

a series of techniques used for the reduction of space, bandwidth, cost transmission, generating time, and the storage of data. These techniques are designed for the elimination of repetition, removal of irrelevancies, and the employment of special coding techniques, such as run-length encoding.

Any of several techniques that reduce the number of bits required to represent information in data transmission or storage, thereby conserving bandwidth and/or memory.

Digital signal-processing techniques that are used to reduce the amount of information in a video signal. This allows the video signal to be sent through telephone data lines.

See file compression.

The process of reducing the size of a file.

Reduction in the size of digital materials by removing redundancy or by approximation; lossless compression can be reversed; lossy compression can not be reversed since information is lost by approximation.

Refers to taking an incoming signal or image, which can be analog or digital, and compressing the data so it can be stored or transmitted faster and using less resources. There are many different algorithms and techniques that are used to compress data.

(data compression) an algorithm that reduces redundant strings of data, resulting in decreased file sizes; can be performed by hardware or software - but only one time

Reduction of dynamic range. Used in broadcasting to achieve greater or more uniform loudness. This is one of the reasons your commercials have louder audio levels than your programs. The audio segment of the commercials signal has been compressed.

The temporary coding of data in a way that saves storage space or transmission time.Most text files can be compressed to about half their normal size.Graphics can be compressed to 10 percent of their original size.

The process or result of converting data to a storage format that requires less space than the original data. RealOptimizer image optimizer plug-in for ACDSee is a great way to compress images for web sharing.

Removing redundancies in data to reduce the amount of data being stored or transmitted. Lossless compression keeps the removal to an absolute minimum to maximize the completeness of the data; lossy compression sacrifices as much data as possible in order to maximize compression.

The process of reducing the information content of a signal so it occupies less space on a transmission channel or storage device and a fundamental concept of video communications. An uncompressed NTSC signal requires about 90 Mbps of throughput, greatly exceeding the speed of all but the fastest and shortest of today's networks. Squeezing the video information can be accomplished by reducing the quality (sending fewer frames in a second or displaying the information in a smaller window) or by eliminating redundancy.

A software or hardware process that "shrinks" images so they occupy less storage space, and can be transmitted faster and easier. Generally accomplished by removing the bits that define blank spaces and other redundant data, and replacing them with a smaller algorithm that represents the removed bits.

A routing feature that eliminates redundancy in data streams, reducing the amount of bandwidth required to transport LAN protocols over a wide area. A method of encoding large amounts of data into a smaller data format that requires a smaller amount of bandwidth for transmission over a network. Supported over frame relay, X.25, and PPP (dial-up lines or leased lines).

A process for removing redundant data from a digital media file or stream to reduce its size or the bandwidth used.

Algorithms used by a computer to reduce the total amount of data in a digitized frame or series of frames of video and/or audio.

Scanners. Encoding the bits of information in an image file so that it takes up less space when stored. Compression results in little or no distortion. See also lossy and non-lossy.

A means of reducing the size of files to allow quicker transmission, or to take up less space. you need a program such as WinZip to compress and uncompress the files.

Broadly in two forms - "lossy" and "losless". JPEG is a lossy compression format; it discards information on a sliding scale of size v. quality. With size over quality the image pixelates. Each time it is compressed it throws away more data. Lossless compression - GIF (Graphics Image Interchange) for onscreen use using LZW (Lempel-Ziv-Welch), also works with TIFFs but delivers larger file size.

In radio transmissions, the process of making the louder passages a bit quieter (and sometimes, making the quiet ones a bit louder) in order to reduce background noise and increase the effective range of the station. In tape recording, compression is used to mask background noise during the recording process. During playback, a mirror image expansion of the signal will result in the original dynamics being reproduced-minus the background noise. See also Dolby; DBX.

Compression is used to reduce the size of files and documents. This can make animations, video or audio run more smoothly, attachments in email messages arrive more quickly and web pages load faster.

a technique that reduces the size of a saved file by elimination or encoding redundancies (i.e., JPEG, MPEG, LZW, etc.)

The process of removing irrelevant information and reducing unneeded space from a file in order to make the file smaller. Compression can cause losses and distortion, depending on the method.

1) A process in which the dynamic 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 ratio, 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. 2) Referring to a variety of digital techniques for reducing the size of a digital data set, e.g. MPEG-2 video compression.

A method for compacting the digital representation of a signal for more efficient transmission or storage.

A process that involves producing a smaller audio file and at the same time actually preserve as much data as possible to maintain quality. In audio editing world, it also means the act of making the volume of audio track uniform.

The reduction in size of data n order to save space or transmission time. See lossy compression, lossless compression, codec.

1. (Multimedia) Compression is used in the digital environment to describe (a) initial digital quantization employing transforms and algorithms encoding data into a representation that requires fewer bits or lower data rates or... 2. processing of an existing digital bit stream to convey the intended information in fewer bits or lower data rates. Compression (bit rate) may be reversible compression, lossless or it may be irreversible compression, lossy.

a reduction in gain or dynamic range of a signal by a compressor. Compression can be used to even out an erratic signal, fatten up sounds, extend sustain of a guitar, sweeten vocals, or push certain sounds forward in the mix of a song by increasing the overall level

In functional analysis, the compression of a linear operator T on a Hilbert space to a subspace K is the operator

Compression is a subtle effect primarily for electric guitar where the highest and lowest points of the sound wave are "limited". This boosts the volume of softer picked notes, while capping the louder ones, giving a more even level of volume. This is frequently used in country music, where fast clean passages can sound uneven unless artificially "squashed".

A state or condition of being pushed or shortened by a force.

A form of stress produced by the action of equal and opposite forces, whose effect is to reduce the length of a material. Compression is a form of pressure. When compressive stress is applied to all surfaces of a material, this is known as volume stress.

a system of forces that decreases volume or shortens distance.

The result of a squeezing or crushing force.  Compression develops along the upper edge of a joist, tension along the lower edge, and horizontal shear through the middle.

A force tending to compress or reduce something.

Stress on a material tending to cause deflection, since, technically, urethane elastomers are considered incompressible. Because no volume change occurs, we prefer to use the term "deflection." Cellular products such as urethane foam do compress because of the collapse of the air-filled cells.

Reduction in volume, and increase in pressure and temperature, of a gas, caused by squeezing it into a smaller space.

A reduction in size or volume, as if by squeezing

The reduction of volume of a vapor or gas by mechanical means.

Means to press or squeeze together. The front and rear suspension systems compress when landing off a jump, hitting a bump, or braking for corners.

regions where the pressure is more than the average due to reductions in volume of the gas

pushing stress or force

A pressing force that squeezes a material together

Forces pushing agglomerated material through a small gap, squeezing and disrupting. Often associated with shear.

The use of digital technology to squeeze, or compress, greater amounts of information into a method of transmission. For example, digital compression technology allows TV broadcasters to provide multiple program content and data using the 6 MHz of spectrum they had been using for a single analog channel transmission.

Pressing or squeezing together; done to slow and stop bleeding.

When specified as a direction for loading - a deformation caused by squeezing the layers of an object in a direction perpendicular to the layers.

A stress which tends to shorten the member which is subjected to it.

Stress that reduces the volume or length of a rock, as that produced by the convergence of plate margins.

The stress that tends to compress material, or shorten it's length.

A system of forces or stresses that tends to decrease the volume or to shorten a substance, or the change of volume produced by such a system of forces.

A squeezing together; the exertion of pressure on a body in such a way as to tend to increase its density; the decrease in a dimension of a body under the action of two external forces directed toward one another in the same straight line.

A pushing force at opposition, as in squeezing. The reason why piers are reinforced with rebar, the bearing force on a wall partition, etc.

The force within a Truss member that has the effect of tending to apply shortening or compressing pressure that Truss member.

Literally, squeezing together; used to indicate the physical change the body undergoes when an external force decreases its volume and increases its density. In embryology, it refers to the abbreviation or curtailing of some stage or stages during development.

Compression "squeezes" files to save space and transmission time. See also Decompression.

Axial force tending to shorten the member.

To squeeze a file so that it takes up less space.

In internal-combustion reciprocating engines, 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 combustion more effective and increases engine efficiency.

A force acting against a structural member. Think of trying to shorten a piece of wood by pushing on it.

A force which tends to squeeze or press together.

Subjecting a material to a load which will tend to compress or push the material together; the opposite of tension.

the "pushing" force

The act of pressing or squeezing together in the direction of a straight line, often referring to the loss of vertebral body height either anteriorly, posteriorly or both; the application of pressure or squeezing which causes an increase in density and decrease dimension of a certain body.

A force or stress charactorized by pressure or squeezing.

A process for squeezing live video and audio through low capacity networks using advanced mathematical techniques called compression algorithms.

This is a style of fitting which tubing fits inside it. The fit is tight and when the water is turned on the pressure helps push the tubing against the fitting which increases the holding power. The fitting itself will have a sharp edge inside the fitting which is angled backwards inside the fitting. This keeps the tubing from being pushed out by water pressure.

To push the chest down so as to stimulate the heart to contract and maintain a blood circulation to the brain.

In geology the term compression refers to the system of forces that tend to decrease the volume of or shorten rocks. Compressive strength refers to the maximum compressive stress that can be applied to a material before failure occurs. In tectonics, plates are always subjected to compressive stress.

The softness of a golf ball.

1. the resilience of a golf ball 2. the flattening of the golf ball when contacted by the club. Golf balls come in 80, 90, 100 or 110 compression. The higher the number the more force required to flatten the side of the golfball at impact.

The hardness of a golf ball, identified by a number - a higher number indicates a ball that requires more force to compress it. Lower compression balls flatten more when hit. 100 would be a high compression golf ball, 80 would be a low compression golf ball.

The measure of hardness a golf ball has, generally rated 80, 90, or 100. Women tend to use softer compression balls while pros use 100 or higher compression.

Refers to the hardness of a golf ball (80, 90, and 100). The higher the number, the harder the ball.

Measure of how much the ball distorts at impact and can affect the feel of a golf ball. Balls range from 80, 90, or 100 compression. Most golfers use an 80 or 90 compression ball.

force necessary to fully reduce a golf ball.

Density of a golf ball.

The flattening of the ball against the clubface at impact. Also the degree of resilience of a ball.

A measure of the relative hardness of a golf ball ranging from 100 (hardest) to 80 (softest). (Like most powerful players, he preferred a 100-compression ball).

The flattening of the ball against the clubface. The faster you swing and the more precisely you hit the ball in the middle of the clubface, the more fun you have.

When a distributor quits or is terminated, his downline moves up one level, thus filling the empty space he left, and "compressing" the company's downline by one level.

Bonuses are earned by, and paid to, IMA that are Bonus Qualified. When an IMA fails to meet the minimum maintenance requirements for earning bonuses at his/her titled position, the Company's computer searches upline until it finds a Bonus Qualified IMA who is eligible for that position or higher, no matter how far upline it has to search. The volume then “Compresses” past all non-Active IMAs in the Downline until it has satisfied its payout requirements with qualified IMA levels or Generations. The term “Compression” is used to describe the temporary condition that occurs when someone fails to meet the maintenance requirements for a particular pay period and the term. ( See “Rollup”)

The force exerted to push the components of a joint together.

(1) The process of increasing the pressure of gas to maintain its flow in a pipeline system. Compressing gas is analogous to pumping liquids, such as water or oil. (2) The process of reducing the amount of data to be stored in an in-line inspection tool.

Pressure exerted on a sealant in a joint.

connection where leader and follower are exerting pressure or generating energy toward one another

Increasing the pressure of natural gas to allow it to be transported by pipeline

Pressure exerted on a compound in a joint, as by placing a light or panel in place against bedding, or placing a stop in position against a bead of compound.

utilized to enhance produc-tion from low pressure gas reservoirs. Compression equipment allows the operator to lower back-pressure on the well and enable more gas to flow to the surface. It can then be compressed and delivered into a higher pressure gathering system for processing and ultimate sale. Compression is also used extensively in gas processing operations to aid in the recovery of natural gas liquids.

Increasing the pressure of natural gas to move it through pipelines or other facilities

The upward stroke of the piston which compresses the air-fuel mixture in the combustion chamber

The action on a spring which decreases its length relative to the force to which it is subjected.

Forces acting inwardly on a body.

Shutting off water flow by forcing a stem with a flat washer against a metal or plastic seat.

Term used to describe a faucet in which the flow of water is shut off by means of a washer that is forced down onto its seat.

Compression occurs when there is something forcing down into the object. For instance, there is compression in a truss rafter on the top chords.

The process of increasing density of materials. As with fiberglass laminates, compression results in the product becoming smaller and pressed together.

The state of being pressed together or sqeezed.

The act of pressing together. As in a compression fracture, nerve compression, or spinal cord compression. To shorten in time. In embryology, there may be compression of development with some stages even omitted.

This feature typically offers a 4:1 compression ratio depending on the type of file being handled and so increases the volume of data, which can be transmitted in a given time, as well as increasing efficiency and decreasing call charges.

The decrease in volume of a soil.

An internal feature present in most current hearing aids that helps to control the intensity of higher volumes. There are many varieties of compression and each one has its advantages and disadvantages, but they all in someway make the hearing aid non-linear.

An increase in density and the resulting decrease in size or magnitude in a medium. 1.the momentary increase in air pressure, caused by the passage of a sound wave. The change in the relative magnitude (peak volume) of and audio signal after processing by a compressor. 3. A reduction in the total digital size of a signal to accommodate cost-effective digital transmission or storage. see also codec.

A phenomenon related to positive pressure. When air is forced into a system, it is compressed and becomes more dense. Depending on the volume or weight of air required down stream in the positive pressure portion of the system, the volume of air at the inlet of a fan may have to be adjusted by the ratio of absolute pressure at the entrance of the fan versus the design requirements in the system.

An undesired decrease in amplitude of a portion of the composite video signal relative to that of another portion. Also, a less than proportional change in output of a circuit for a change in input level. For example, compression of the sync pulse means a decrease in the percentage of sync during transmission.

Any process that transforms a signal to a more compact form (fewer bits) for easier transfer, and then restores the signal after transfer.

An area of high air pressure that acts as the wave crest for sound waves. The spacing between successive compressions is the wavelength of sound, and the number of successive areas of compression that arrive at the ear per second is the frequency, or pitch, of the sound.