Difference between revisions of "Lossy"
From Hydrogenaudio Knowledgebase
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'''Lossy''' compression is a form of compression that takes advantage of the characteristics of human perception. | '''Lossy''' compression is a form of compression that takes advantage of the characteristics of human perception. | ||
| − | =Does Lossy Encoding Preserve Surround Information?= | + | ==Does Lossy Encoding Preserve Surround Information?== |
Depending on the encoder and settings, degradation of surround imaging may happen. Use higher [[bitrate]]. Mid/Side stereo of [[LAME]] or [[AAC]] does not destroy surround information. Also [[MPC]] preserves surround information with standard settings reasonably well. The lower the [[bitrate]], the worse you can expect the surround imaging become. | Depending on the encoder and settings, degradation of surround imaging may happen. Use higher [[bitrate]]. Mid/Side stereo of [[LAME]] or [[AAC]] does not destroy surround information. Also [[MPC]] preserves surround information with standard settings reasonably well. The lower the [[bitrate]], the worse you can expect the surround imaging become. | ||
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* [http://www.hydrogenaudio.org/forums/index.php?act=ST&f=15&t=4639 More discussion] | * [http://www.hydrogenaudio.org/forums/index.php?act=ST&f=15&t=4639 More discussion] | ||
| − | =List of common lossy formats= | + | ==List of common lossy formats== |
* [[MP3]] | * [[MP3]] | ||
* [[Ogg Vorbis]] | * [[Ogg Vorbis]] | ||
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* [[AC3]] | * [[AC3]] | ||
* [[Speex]] (speech only) | * [[Speex]] (speech only) | ||
| + | |||
| + | ==See Also== | ||
| + | * [[Lossless]] | ||
Revision as of 06:04, 13 December 2004
Lossy compression is a form of compression that takes advantage of the characteristics of human perception.
Does Lossy Encoding Preserve Surround Information?
Depending on the encoder and settings, degradation of surround imaging may happen. Use higher bitrate. Mid/Side stereo of LAME or AAC does not destroy surround information. Also MPC preserves surround information with standard settings reasonably well. The lower the bitrate, the worse you can expect the surround imaging become.
List of common lossy formats
- MP3
- Ogg Vorbis
- AAC (also improperly known as MP4 or M4A)
- MPC/Musepack/MPPlus (MP+)
- MP2
- AC3
- Speex (speech only)
