Hi Augustime.

I used Ambisonics as an example (or a "use case"); all surround formats
requires more than 2 channels (appart from UHJ). The problem is that
Firefox (and other browsers) don't support more than 2 channels.
Sometimes the problem is on the device or the operating system;
although Chrome supports more than 2 channels, on the Android OS the
number of channels available to Chrome is limited to 2.

Worst: most audio API and codecs *assume* that "multichannel" means
something like "5.1" or "7.1", and apply default rules. Audio API (and
codecs too) should just expose their channels in the order of the
audio stream, and not try to decide what is the surround scheme by
looking at the number of channels.

There's a reason why multichannel audio is so difficult; in order to
help programmers, most audio API are making things more confusing...

I guess I'm not really answering your question...
--
Marc

On Fri, 23 Oct 2015 21:32:14 +0100
Augustine Leudar <augustineleu...@gmail.com> wrote:

> What about other forms of surround sound that are not ambisonics ?
> 
> On Friday, 23 October 2015, Marc Lavallée <m...@hacklava.net> wrote:
> 
> > The problem is that Mozilla (and maybe others) just need to fix (or
> > better document) their version of the Web Audio API. Then it'd be
> > possible to decode ambisonic at any order. Chrome does a better job,
> > but it's (hopefully) a temporary monopoly, since Mozilla is
> > organising the Web Audio Conference.
> > --
> > Marc
> >
> > On Fri, 23 Oct 2015 09:37:06 +0100
> > Dave Malham <dave.mal...@york.ac.uk <javascript:;>> wrote:
> >
> > > I think the problem is the fact that at least one of the decoders
> > > needed is proprietary so costs money to include which makes it
> > > difficult for free browsers, if not backed by mega corporations.
> > > Of course, I could well be wrong (again) but it is a shame when
> > > Mozilla loses it's position as the most standard compliant
> > > browser, especially when it impacts audio.
> > >
> > >     Dave
> > >
> > >
> > > On 22 October 2015 at 13:44, David Pickett <d...@fugato.com
> > <javascript:;>> wrote:
> > >
> > > > Bruce Wiggins' webpage on browsers that play surround recordings
> > > > using the HTML5 <audio> tag is 3.5 years old.
> > > >
> > > > http://www.brucewiggins.co.uk/?p=265
> > > >
> > > > I dont use IE, and Firefox doesnt play ball at all on the PC,
> > > > so I use Chrome for multi-channel aac files.
> > > >
> > > > http://www.fugato.com/pickett/surround-tests.shtml
> > > >
> > > > But it is disappointing to think that no other browsers have
> > > > caught up in the last three years.
> > > >
> > > > Has anyone tested any others with multi-channel files?
> > > >
> > > > David
> > > >
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> > > >
> > >
> > >
> > >
> >
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> 

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