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Apple open sources its ALAC lossless audio codec

The H Open - Apple has announced the release of its ALAC lossless audio codec as open source. The Apple Lossless Audio Codec (ALAC) is used to compress the size of digital audio files without losing any of the original information, making a decoded ALAC stream "bit-for-bit identical to the original uncompressed audio file".

Similar to other lossless codecs like FLAC, files are typically reduced to approximately 50 per cent of their original size. File formats such as MP3 and AAC are considered to be "lossy", in that converting to them results in the loss of some fidelity while providing much better compression.