wok-current annotate wavpack/description.txt @ rev 25601
use gcc49-lib-base for openldap-dev
| author | Stanislas Leduc <shann@slitaz.org> |
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| date | Fri Sep 01 12:04:33 2023 +0000 (16 months ago) |
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| rev | line source |
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| Hans-G?nter@25406 | 1 WavPack is a completely open audio compression format providing lossless, |
| Hans-G?nter@25406 | 2 high-quality lossy, and a unique hybrid compression mode. |
| Hans-G?nter@25406 | 3 |
| Hans-G?nter@25406 | 4 In the default lossless mode WavPack acts just like a WinZip compressor |
| Hans-G?nter@25406 | 5 for audio files. However, unlike MP3 or WMA encoding which can affect the |
| Hans-G?nter@25406 | 6 sound quality, not a single bit of the original information is lost, so |
| Hans-G?nter@25406 | 7 there's no chance of degradation. This makes lossless mode ideal for |
| Hans-G?nter@25406 | 8 archiving audio material or any other situation where quality is paramount. |
| Hans-G?nter@25406 | 9 The compression ratio depends on the source material, but generally is |
| Hans-G?nter@25406 | 10 between 30% and 70%. |
| Hans-G?nter@25406 | 11 |
| Hans-G?nter@25406 | 12 The hybrid mode provides all the advantages of lossless compression with an |
| Hans-G?nter@25406 | 13 additional bonus. Instead of creating a single file, this mode creates both |
| Hans-G?nter@25406 | 14 a relatively small, high-quality lossy file that can be used all by itself, |
| Hans-G?nter@25406 | 15 and a "correction" file that (when combined with the lossy file) provides |
| Hans-G?nter@25406 | 16 full lossless restoration. For some users this means never having to choose |
| Hans-G?nter@25406 | 17 between lossless and lossy compression! |
| Hans-G?nter@25406 | 18 |
| Hans-G?nter@25406 | 19 WavPack employs only well known, public domain techniques (i.e., linear |
| Hans-G?nter@25406 | 20 prediction with LMS adaptation, Elias and Golomb codes) in its |
| Hans-G?nter@25406 | 21 implementation. |
| Hans-G?nter@25406 | 22 Methods and algorithms that have ever been patented (e.g., arithmetic |
| Hans-G?nter@25406 | 23 coding, LZW compression) are specifically avoided. This ensures that WavPack |
| Hans-G?nter@25406 | 24 encoders and decoders will remain open and royalty-free. |