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| author | Pascal Bellard <pascal.bellard@slitaz.org> |
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| date | Wed Nov 08 16:45:57 2023 +0000 (12 months ago) |
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1 WavPack is a completely open audio compression format providing lossless,
2 high-quality lossy, and a unique hybrid compression mode.
4 In the default lossless mode WavPack acts just like a WinZip compressor
5 for audio files. However, unlike MP3 or WMA encoding which can affect the
6 sound quality, not a single bit of the original information is lost, so
7 there's no chance of degradation. This makes lossless mode ideal for
8 archiving audio material or any other situation where quality is paramount.
9 The compression ratio depends on the source material, but generally is
10 between 30% and 70%.
12 The hybrid mode provides all the advantages of lossless compression with an
13 additional bonus. Instead of creating a single file, this mode creates both
14 a relatively small, high-quality lossy file that can be used all by itself,
15 and a "correction" file that (when combined with the lossy file) provides
16 full lossless restoration. For some users this means never having to choose
17 between lossless and lossy compression!
19 WavPack employs only well known, public domain techniques (i.e., linear
20 prediction with LMS adaptation, Elias and Golomb codes) in its
21 implementation.
22 Methods and algorithms that have ever been patented (e.g., arithmetic
23 coding, LZW compression) are specifically avoided. This ensures that WavPack
24 encoders and decoders will remain open and royalty-free.