[pulseaudio-discuss] Bluetooth A2DP aptX codec quality

Pali Rohár pali.rohar at gmail.com
Thu Sep 13 08:29:29 UTC 2018

On Thursday 13 September 2018 11:23:58 Tanu Kaskinen wrote:
> On Wed, 2018-09-12 at 19:03 +0300, Luiz Augusto von Dentz wrote:
> > On Wed, Sep 12, 2018 at 1:42 PM, Pali Rohár <pali.rohar at gmail.com> wrote:
> > > 1) What to do with aptX? It is really useful for users to have it in
> > > Linux & pulseaudio? Because it looks like that the only thing which it
> > > has better is lower latency. But can pulseaudio on Linux system really
> > > achieve it?
> > 
> > I don't think, not the level of latency necessary for speech and to
> > avoid lip sync issues, so that would leave aptX at the same category
> > as SBC.
> How likely is it that a device that supports aptX only supports lower
> SBC bitrates? In such situation aptX would apparently be an
> improvement, but maybe that doesn't happen in real life.

Such combination does not make sense for me. I do not see reason why
headset would support only low SBC mode which is either due to slow
bluetooth stack or slow DSP and also aptX at higher bitrate...

I have not heard about such hardware.

Pali Rohár
pali.rohar at gmail.com

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