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WavPack is a free lossless audio compression format. WavPack allows you to losslessly compress (and restore) both 16 and 24-bit audio files in the .WAV format. Like other lossless compression schemes the data reduction varies with the source, but it is generally between 25% and 50% for typical popular music and somewhat better than that for classical music and other sources with greater dynamic range.

WavPack also incorporates an unique "hybrid" mode that provides all the advantages of lossless compression with an additional bonus. Instead of creating a single file, this mode creates both a relatively small, high-quality lossy file that can be used all by itself, and a "correction" file that (when combined with the lossy file) provides full lossless restoration. For some users this means never having to choose between lossless and lossy compression!

WavPack is completely open source, released under a BSDish license.


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