similar to: Re: [ogg-dev] Ambisonics in Ogg Vorbis

"Gabriel I." wrote: > Greetings, > > I apologize if I posted this in the wrong list, I wasn't sure where to post > it, but seeing as the tags are called "vorbis comments" I thought vorbis, > rather than ogg-dev, would be the right choice. (actually, I'm not even a > developer anyway) Hi Gabriel, I doubt whether the Xiph community would promote a

Hi, I have posted this three times to the flac-dev, vorbis-dev, and ogg-dev mailing lists. I wanted to see what code there was currently to support Ambisonics. So I downloaded the code from the xiph download page for libogg-1.1.3, libvorbis-1.1.2, vorbis-tools-1.1.1 and flac-1.1.4, but wasn't able to find anything. If it exists then I missed it, so could somebody please point me to it.

On 2/28/07, Ivo Emanuel Gon?alves <justivo@gmail.com> wrote: > On 2/28/07, Ralph Giles <giles@xiph.org> wrote: > > Well, there are todo pages at wiki.xiph.org, but I meant more in the > > community folklore sense. My point is a roadmap doesn't help much unless > > there are people committed to making things happen. That's been the > > problem with a

On 2/28/07, Ivo Emanuel Gon?alves <justivo@gmail.com> wrote: > On 2/28/07, Ralph Giles <giles@xiph.org> wrote: > > Well, there are todo pages at wiki.xiph.org, but I meant more in the > > community folklore sense. My point is a roadmap doesn't help much unless > > there are people committed to making things happen. That's been the > > problem with a

On 3/22/07, Brian Willoughby <brianw@sounds.wa.com> wrote: ... > But to return to your question, exactly what kind of "support" are > you looking for? I wasn't looking for any particular support, but just to see what support was there (if any). ... > I do not believe that there is any need for code specifically > supporting Ambisonics. FLAC supports conversion to

Not sure if this belongs here or in flac-dev. I am subscribed to both, so flop it over if fits better over there. Looking at the Changelog for FLAC 1.2.1 (17-Sep-2007), it says: "With the new --keep-foreign-metadata in flac, non-audio RIFF and AIFF chunks can be stored in FLAC files and recreated when decoding." Where can I find more detail on what is a

On 9/26/07, Josh Coalson <xflac@yahoo.com> wrote: > --- Martin Leese <martin.leese@stanfordalumni.org> wrote: ... > > Where can I find more detail on what is a > > "non-audio" RIFF chunk? > > it is any riff chunk that is not "fmt " or "data" > > > Ambisonic ".amb" files are WAVE-EX files with > > a

" Ivo Emanuel Gon?alves " <justivo@gmail.com> wrote: > On 9/24/07, Ian Malone <ibmalone@gmail.com> wrote: > > The point I > > wanted to bring up was the MAY ignore unrecognised stream > > types, which I understood to be a future proofing mechanism. > > Oh. > > There is a similar notice in the wiki, which I did not integrate in > the

" Ivo Emanuel Gon?alves " <justivo@gmail.com> wrote: > On 9/24/07, Ian Malone <ibmalone@gmail.com> wrote: > > The point I > > wanted to bring up was the MAY ignore unrecognised stream > > types, which I understood to be a future proofing mechanism. > > Oh. > > There is a similar notice in the wiki, which I did not integrate in > the

Martin, I do not believe that there is any need for code specifically supporting Ambisonics. FLAC supports conversion to and from other audio formats which hold multiple channels. Ambisonics B-format involves channels WXYZ, C-format is UHJ or BHJ, G-Format can be any number of channels, but typically 5.1 on DVD. You can work with Ambisonic recordings by either using individual mono

Brian Willoughby <brianw at sounds.wa.com> > Isn't there a standard option to place FLAC data within an Ogg > container? I don't use it myself, but I understand that it is quite > popular. Would it be possible to interleave multiple FLAC blocks > this way? In other words, can Ogg suffice as the second level of > grouping that you refer to? Etienne was asking for

Where can I find the Header file or whatever which specifies the "Mapping" flag. In feb - apr 2007, there was a lot of discussion about Ambisonics and Monty kindly stated that Mapping = 1 ; Denotes and Ambisonic file as opposed to = 0 which is 1 speaker/ 1 channel Has this been written explicitly into the standard? Which standard should I be looking at?

Erik de Castro Lopo <mle+la at mega-nerd.com> wrote: > Martin Leese wrote: >> Anyway, calling alloc()s with no corresponding >> free()s is a memory leak. Not good code. > > The alloca() function allocates space on the stack and > that allocation is automatically freed when the function > that did the allocation returns. > > The Linux man page is quite

>Yesterday I have finished writing the ambisonic pan filter for oggenc. May I ask what this "pan filter" is? I made some tentative suggestions for coupling Ambisonic B-format in a post "Vorbis Ambisonic coupling" on 4feb07 I gather from the last monthly meeting, that some of you, including Monty, had problems with the phase behaviour of B-format. Would anyone like a

Ralph Giles <giles at thaumas.net> wrote: > On 5 March 2012 01:51, Silvia Pfeiffer <silvia at silvia-pfeiffer.de> wrote: >> I've started the following wiki page: >> https://wiki.xiph.org/Chapter_Extension > > Not webvtt-style '-->' timestamp separators? :) ... > We should also trim leading and trailing whitespace. Silvia Pfeiffer <silvia at

e deleflie <edeleflie at gmail.com> ... > ok, I do realise that the extending the maximum channel count may be > difficult ... there's gotta be a way to do it though. Perhaps a comparison of the FLAC structure with that of Vorbis will help. Within a FLAC stream the audio is split into blocks which are grouped (interleaved). But within each block the eight channels are chained

"Oliver Oli" <oliver.oli+0815 at gmail.com> wrote: > Are we sure we know what we are talking about? What is Ogg, what is > Vorbis and what OggPCM? Maybe one of the developers can bring > enlightenment to us :-). As I understood it OggPCM is equivalent to > Vorbis. So it's not Ogg/PCM, but Ogg/OggPCM. Please correct me if I'm > telling utterly crap. Yep,

>I have been giving some thought to how to include Ambisonics in Ogg Vorbis. As I understand it, mapping type = 1 was meant from the start to indicate an Ambisonic stream. The only other information required is the number of channels which thanks to Mr Leese's clever trick tells us exactly which Ambisonic channels are used up to 3rd order. __________________ >The channel coupling

On 7/23/13, Silvia Pfeiffer <silviapfeiffer1 at gmail.com> wrote: > On 23 Jul 2013 15:17, "Martin Leese" <martin.leese at stanfordalumni.org> > wrote: ... >> Information about Metadata >> has been collected together in the Xiph Wiki >> at: >> https://wiki.xiph.org/Metadata > > That page is a bit outdated. It has CMML in it which we

Erik de Castro Lopo <mle+xiph@mega-nerd.com> wrote: > Martin Leese wrote: > > So what is "OggPCM"? I started this thread > > because I was puzzled why someone was > > changing a draft instead of the document > > itself. > > The original OggPCM was started by a person who really didn't > lnow what they were doing and wouldn't listen to