similar to: True surround sound for Ogg -- a proposal

Date: Mon, 10 Jul 2000 14:51:12 +0100 (BST) From: DG Malham <dgm2@york.ac.uk> To: vorbis-dev@xiph.org Cc: DG Malham <dgm2@york.ac.uk>, Rob Fletcher <rpf1@york.ac.uk> Subject: Re: [vorbis-dev] True surround sound for Ogg -- a proposal (fwd) In-Reply-To: <Pine.SGI.3.95L.1000710092216.9043693B-100000@turpin.york.ac.uk> Message-ID:

This came out of the OggPCM discussion, but I think it needs to be addressed on a wider scale. Let's start here, 5 years ago.. http://lists.xiph.org/pipermail/vorbis-dev/2000-July/009513.html (I included this email, below) I emailed David (author of that email) and asked him to join this list. I'm thinking, as I look at the problem, that surround sound needs to be defined _outside_

>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

Since the opusenc and opusinfo changes were independent I split them up and landed the opusinfo changes (with updated mapping family numbers). - Mark On Thu, Sep 6, 2018 at 4:22 AM, Mark Harris <mark.hsj at gmail.com> wrote: > Hi Drew, > > Sorry for the delay. > > FYI the patch that you attached is not your latest version. This > thread that you replied to is an older

On Sat, 28 May 2016 16:21:33 -0700, Michael Graczyk <mgraczyk at google.com> wrote : > Hi Marc, Hi Micheal. > On Sat, May 28, 2016 at 10:44 AM, Marc Lavallée <marc at hacklava.net> > wrote: > > I subscribed because your discussion on the IETF draft ("Ambisonics > > in an Ogg Opus Container") was mentioned on the sursound list. > > Thanks for

On Mon, Apr 25, 2016 at 9:32 AM, Timothy B. Terriberry <tterribe at xiph.org> wrote: > Jean-Marc Valin wrote: >> >> Would it make sense to allow an arbitrary number of channels and just >> "truncate" the list of channels. For example, two-channel ambisonics >> would be W plus X and three-channel would be W, X and Y. The idea is >> that you would get

I'm trying to set up the console as an extension (so I can set up overhead paging), but I can't seem to get it to work. When I call my paging extension, I get an error that it can't open the device: -- Executing Ringing("Zap/9-1", "") in new stack -- Executing Dial("Zap/9-1", "Console/dsp0|18|A(new/whistle)") in new stack << Call

Hello, We (Google) have been experimenting with configuration and adjustments to CELT-only Opus that give good results for compressing ambisonic audio signals [1]. Based on our results so far, we would like to use Opus to encode spatial audio. We hope to make it easy/possible to use libopus with other common tools and software modules (ffmpeg/libav in particular). Based on my reading of the

"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

I threw a rough draft of an alternative format incorporating the comments received so far in this discussion on the wiki: http://wiki.xiph.org/index.php/OggPCM#Format Oliver, This seems to me like it would support the ambisonic requirements you mention, though it doesn't (and I imagine won't) describe the mic locations. Somebody who actually uses that info could probably define extra

Hello Tim and others, Thanks for your help explaining this process on IRC. I wrote out a first draft in the RFC xml format. I have attached the xml (labeled as xml.txt so it will appear inline) and the rendered txt files. Please let me know where I can make improvements. I will upload this draft to the IETF datatracker and send it out to codec@ after addressing your comments. -------------- next

Josh Coalson wrote: > --- smoerk <smoerk@gmx.de> wrote: > >>i didn't find anything about tagging flac files as surround files. i >>think there should some possibility to tell the player how to play a >>multi-channel file (how to map the different channels to the speakers >>or if there some decode is needed, like for ambisonic files). > > > it

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

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?

Hi Opus list. I subscribed because your discussion on the IETF draft ("Ambisonics in an Ogg Opus Container") was mentioned on the sursound list. I tried Opus for ambisonics more than a year ago. It does works with uncoupled channels (I had to patch the encoder). I don't know what else could be done to optimize support for ambisonics, as I'm not a codec expert. So I think that

On Oct 4, 2009, at 16:48, James Cloos wrote: > I always thought that the best way to put ambisonic media in flac > was to > use an ogg container, with the 0-order w channel in one flac > stream, the > three first-order channels in a second flac stream, the five second- > order > channels in a third flac stream and the seven third-order channels > in a > forth flac

i didn't find anything about tagging flac files as surround files. i think there should some possibility to tell the player how to play a multi-channel file (how to map the different channels to the speakers or if there some decode is needed, like for ambisonic files). any idea how to implement it?

Hi Michael, On 04/25/2016 05:32 AM, Michael Graczyk wrote: > Channel Mapping Family 2 > > Allowed numbers of channels: (1 + l)^2 for l = 1...15. > > Explicitly 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, > 225. Ambisonics from first to fifteenth order. Would it make sense to allow an arbitrary number of channels and just "truncate" the list of

I was looking into adding Ogg support to gnome-vfs (virtual file system library for GNOME). What I currently do for mime-magic checking is check for the "OggS" part at the beginning. Is this correct? Secondly - what is the "canonical" mime-type? Right now I am using 'audio/x-ogg' - is this correct? Regards, Ali --- >8 ---- List archives:

Hi! - what is the mime type for ogg? - does the current implementation (xmms/winamp plugin) support http streaming? Bye, Peter Surda (Shurdeek) <surda@bigfoot.com>, ICQ 10236103, +4369910964300 -- Press every key to continue. --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/