similar to: Decoding for ambisonic Ogg audiob

On Tue, 31 May 2016 09:41:37 -0700 Michael Graczyk <mgraczyk at google.com> wrote: > UHJ is an interesting way to preserve compatibility with non-ambisonic > playback systems. However, I have not seen it generalized to higher > orders. I expect that its popularity will decrease as HOA becomes more > and more common. If UHJ becomes popular in the future, we could > specify

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

A strategy for downmix support a) simple 4.0, 5.0, 6.0 7.0 Speaker Decode on the player via a separate library from the Vorbis core. This is the easy panning solution on the Wiki Ambisonic Decoder page and requires hardly any computing power. Most important cos its all about surround init? This library can be extended to have Shelf Filters & Distance Compensation for more sophisticated

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 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

"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 everyone, Over the last two weeks or so, I've been thinking about how to add surround sound to Ogg -- and more than that, to do it in the best way possible. With this in mind, I started considering using Ambisonic surround sound. The advantages of this format are considerable: a) It was developed in the early to mid '70s, so the patents should be expired by now.

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

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

Michael Graczyk wrote: ... > UHJ is an interesting way to preserve compatibility with non-ambisonic > playback systems. ... > If UHJ becomes popular in the future, we could > specify rules for encapsulating UHJ in Ogg. I guess it depends on how you define popular. The UHJ Discography lists over 270 UHJ-encoded records. This EXcludes over 450 releases by Nimbus Records. The UHJ

Marc, Thanks for the comments. On Sat, May 28, 2016 at 5:50 PM, Marc Lavallée <marc at hacklava.net> wrote: > So, channels will stay uncoupled for Ambisonics? That would be great, > because considering how good Opus already is, I don't think that more > optimization is required, and it would put content creators at ease; > they often believe that any compression or channel

> I assume, somewhere, someone has a compendium of recommended hardware for ambisonics? Something to sanity check/inform equipment selections of someone building My First Ambisonics Rig? Not at all Monty. This is an important question and I am ashamed to say I can't point you to a good answer. In the meantime, have a look at Permananent Ambisonic Systems from

>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

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.

Brian Willoughby <brianw at sounds.wa.com> wrote: > On Jan 7, 2011, at 16:27, Declan Kelly wrote: ... >> As the human hearing can't really tell direction with lower >> frequencies, >> it's not as essential. This same shortcut is why most movie "surround >> sound" systems have only one sub bass channel. > > In this case, you have been misled

Hi Marc, 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 your interest! Please feel free to voice your support for this work on the codec at ietf.org mailing list. The more support the better. > I

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_

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?

Not exactly sure if this is what you are looking for, but here goes: RC3 and prior maintain channel seperation with Q>=5.0 (cut-off is exact) Vorbis 1.0 maintains channel seperation with Q>=6.0 (not sure of the exact cut-off) with release code, selecting a Q of 5.99 or lower will make assumptions for channel seperation to save bits. earch the archives for "ambisonics" - you may

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: