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lossy compression
(redirected from Lossy data compression)

    Also found in: Medical, Wikipedia, Hutchinson 0.04 sec.

A compression technique that does not decompress data back to 100% of the original. Lossy methods provide high degrees of compression and result in very small compressed files, but there is a certain amount of loss when they are restored.

Audio, video and some imaging applications can tolerate loss, and in many cases, it may not be noticeable to the human ear or eye. In other cases, it may be noticeable, but not that critical to the application. The more tolerance for loss, the smaller the file can be compressed, and the faster the file can be transmitted over a network. Examples of lossy file formats are MP3, AAC, MPEG and JPEG.

Lossy compression is never used for business data and text, which demand a perfect "lossless" restoration. See lossless compression, MP3, AAC, MPEG and JPEG.

Lossless Vs. Lossy Compression
Business data requires lossless compression, while audio and video applications can tolerate some loss, which may not be very noticeable.



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Lossy data compression means that the restored data may not be completely identical to the original data.
The value of compression for data protection over TCP/IP WANs by Thompson, Steve / Computer Technology Review
AHA is a fabless semiconductor company that develops, markets and sells data coding technologies such as Reed-Solomon, Viterbi, Turbo Product Codes, and both lossless and lossy data compression.
AHA Announces Turbo Product Code Core Generator Technology by Business Wire
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