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DATA COMPRESSION Definition We define DATA COMPRESSION |
DATA COMPRESSION - 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, where loss of quality is acceptable in many situations. Lossy compression 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 notice. 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. |
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