Jared (jared@celab21.students.csee.uq.edu.au) wrote :> Saw an article today on /. which reports that Dolby are insisting the > NETBSD dudes remove the ac3dec package from their site. Someone suggested > that we need an open source solution.ac3dec is already open ( GPL ).> Could Vorbis in the Ogg framework be this solution, can we create a pretty > simple 5.1 stream?I _believe_ ogg/vorbis can support multichannel sound. It also supports real spatial (3D, AC3 is only 2D) sound. None of this is actually available right now , AFAIK. -- David Balazic -------------- "Be excellent to each other." - Bill & Ted - - - - - - - - - - - - - - - - - - - - - - --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
On Wed, 8 Aug 2001, David Balazic wrote:> Jared (jared@celab21.students.csee.uq.edu.au) wrote : > > > Saw an article today on /. which reports that Dolby are insisting the > > NETBSD dudes remove the ac3dec package from their site. Someone suggested > > that we need an open source solution. > > ac3dec is already open ( GPL ).Yeah it is, but the AC3 codec itself isn't, that is patented by Dolby, who are asking for ac3dec to be either removed, or a license fee payed for.> > > Could Vorbis in the Ogg framework be this solution, can we create a pretty > > simple 5.1 stream? > > I _believe_ ogg/vorbis can support multichannel sound. > It also supports real spatial (3D, AC3 is only 2D) sound. > > None of this is actually available right now , AFAIK.I'm not quite sure what you mean by real spatial? I was always under the impression that AC3 was spatial due to its 5 channel nature, which allows for positioning of a signal almost anywhere inside the sound field. Regards, J --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
[David Balazic]> I _believe_ ogg/vorbis can support multichannel sound. > It also supports real spatial (3D, AC3 is only 2D) sound. > > None of this is actually available right now , AFAIK.>2-channel is already in there and working, with occasionalreports of people trying to figure out how to set up their systems to sample >2-channel audio occasionally trickling into this very list. ;) -- Victoria E. Lease <vlease@floofy-skirts.org> C66F 5745 AE21 B21F 5326 FA12 DBC2 9245 9475 3F70 --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
On Wed, 8 Aug 2001, David Balazic wrote:> Jared (jared@celab21.students.csee.uq.edu.au) wrote : > > > Saw an article today on /. which reports that Dolby are insisting the > > NETBSD dudes remove the ac3dec package from their site. Someone suggested > > that we need an open source solution. > > ac3dec is already open ( GPL ).Yes. This is a patent issue, not a copyright issue. We actually have some (very little anymore) of their code in libao. Don't worry, it's not the patented part. :) (Well, unless they patented writing to WAV files and /dev/dsp.) --- Stan Seibert --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.