Shorten (SHN) is a mode of data compression of files that performs lossless compression on CD-quality audio files. The file format compresses audio data but has been surpassed in popularity by other lossless audio codecs like FLAC, Monkey’s Audio, MPEG-4 ALS, WavPack and TTA.
A large number of legally traded concert recordings are encoded as Shorten files and that makes it the common format in use even now. Shorten files use the .SHN file extension and since they are lossless, they can be transcoded with more effective codecs without any significant loss.
Shorten files are lossless files and can be converted to any other lossless format without a decrease in audio quality. Several programs are employed for the purpose. The open source firmware Rockbox can play Shorten files on players with software decoding support.
Lossless data compression is used in Zip file format and the Unix tool gzip. It also finds application in functioning as a component within lossy data compression technologies. Image file formats like PNG or GIF use lossless compression only but other formats such as TIFF and MNG may use either of the two compression methods. The different types of lossless compression formats include FLAC, WavPack, ALAC and WavPack.