[alsa-devel] Audio Mini Conference Minutes - Edinburgh 21st October 2013

Mark Brown broonie at kernel.org
Thu Nov 21 19:22:11 CET 2013

On Mon, Nov 18, 2013 at 05:35:42PM +0000, Liam Girdwood wrote:
> On Sat, 2013-11-16 at 17:01 +0800, Wang Xingchao wrote:

> > > We could use offload, on roadmap for Hires audio on android PCM,
> > > maybe float instead of 24 bit. Need for 192kHz, Probably not use effects.

> > Does android support HBR audio now? As i know from Dolby guys, no
> > customers in Android area are buying Dolby TrueHD license, so i guess
> > the answer is NO. Most of the customers are from AV receivers and
> > BlueRay players.

> Afaik, no one is using high Bit rate audio atm, but there is increasing
> interest amongst Android OEMs.

There's a few things shipped doing 192kHz/24 bit - the LG G2 was one of
the first IIRC.

> Most of the x86 and ARM HW will support HBR audio over ASoC PCM DAIs and
> HDA, but I'm not sure about which HDMI audio devices support HBR in HW
> atm...

It should be relatively common I suppose given that video sources have
tended to use HBR for a long time (even DVDs do it as standard), though
it's possible the mobile
chipsets are limited in some way.
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