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Vorbis (development) resurrection, surround...
LordWarlock
post Feb 28 2010, 22:47
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Vorbis surround update.
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bawjaws
post Mar 16 2010, 11:23
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Update #2

http://people.xiph.org/~xiphmont/surround/demo2.html
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SebastianG
post Mar 16 2010, 13:57
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QUOTE (bawjaws @ Mar 16 2010, 11:23) *


Let me quote something:
QUOTE
[...] This suggests that a coupled entropy backend is consistently useful, even in the absence of pairwise coupling. [...]

Translation: "square polar mapping" is essentially useless. Duh! That's what I've been saying for years... rolleyes.gif
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NullC
post Mar 27 2010, 00:16
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QUOTE (SebastianG @ Mar 16 2010, 05:57) *
QUOTE
[...] This suggests that a coupled entropy backend is consistently useful, even in the absence of pairwise coupling. [...]

Translation: "square polar mapping" is essentially useless. Duh! That's what I've been saying for years... rolleyes.gif


That isn't what it says at all. The figure in "contribution of the entropy backend" shows only a fairly modest contribution from the entropy coding: The distance from the minimum of the two upper lines to the lower line. It's a contribution, but not a big one.

Just because a particular linear transform doesn't compact all the energy doesn't make it useless. Even if there were no predictive gain from the transformation, it would still be useful in that it changes the noise distribution,
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Posts in this topic
- LordWarlock   Vorbis (development) resurrection   Feb 28 2010, 22:47
- - fedetxf   This makes sense seeing the increased interest in ...   Mar 1 2010, 18:47
- - skamp   Who wants us to watch movies in a web browser? Ple...   Mar 2 2010, 05:49
- - HotshotGG   Ohh nice it's 100x times easier to understand ...   Mar 2 2010, 14:43
- - timcupery   I'm not hot for watching movies in a browser, ...   Mar 2 2010, 18:13
- - HotshotGG   QUOTE Theora is improved to the point that it...   Mar 2 2010, 21:16
|- - timcupery   QUOTE (HotshotGG @ Mar 2 2010, 15:16) I t...   Mar 3 2010, 05:52
- - gameplaya15143   QUOTE (LordWarlock @ Feb 28 2010, 16:47) ...   Mar 7 2010, 06:43
- - bawjaws   Update #2 http://people.xiph.org/~xiphmont/surrou...   Mar 16 2010, 11:23
|- - SebastianG   QUOTE (bawjaws @ Mar 16 2010, 11:23) Upda...   Mar 16 2010, 13:57
|- - bawjaws   Xiph have added a web page with ideas for where pe...   Mar 22 2010, 12:24
|- - NullC   QUOTE (SebastianG @ Mar 16 2010, 05:57) Q...   Mar 27 2010, 00:16
|- - xiphmont   QUOTE (SebastianG @ Mar 16 2010, 08:57) L...   Mar 28 2010, 07:01
|- - saratoga   xiphmont: As long as you're here, could I a...   Mar 29 2010, 01:14
- - HotshotGG   QUOTE Update #2 http://people.xiph.org/~xiphmont/...   Mar 16 2010, 13:37
- - HotshotGG   QUOTE Xiph have added a web page with ideas for wh...   Mar 22 2010, 17:11
- - LordWarlock   Released as libao 1.0.0, libVorbis 1.3.1 and vorbi...   Mar 27 2010, 10:39
- - SebastianG   QUOTE (NullC @ Mar 27 2010, 00:16) That i...   Mar 28 2010, 17:31
- - SebastianG   QUOTE (SebastianG @ Mar 28 2010, 17:31) Q...   Apr 5 2010, 15:25


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