WavPack

Description
WavPack is an open audio compression format which can provide lossless, lossy and hybrid compression modes. The v4.0 format, while loosely based on previous versions, has undergone major redesign.

Information

 * WavPack 4.0 File / Block Format
 * WavPack 4.60 Library Documentation
 * WavPack section from David Salomon's book 'Data Compression: The Complete Reference' (PDF link)

Software

 * WavPack downloads
 * Software supporting WavPack