09.12.2019, 12:57, "Pali Rohár" <pali.rohar@xxxxxxxxx>: > On Monday 09 December 2019 14:47:26 Andrey Semashev wrote: >> As a user, I don't know whether I can use SBC XQ. I don't know whether its >> bitrate will fit in my radio conditions. If my device happens to support SBC >> XQ, that is the codec that will get picked upon connection. Please, correct >> me if I'm wrong, but I don't see a way to influence that. > > You can ask same question for aptX-HD codec. It has also fixed high > bitrate. > >> SBC XQ is high quality and high bitrate, true, but PA should adapt to the >> actual use conditions. > > SBC XQ is defined with usage of one specific bitpool value. > >> More so if it actually has the means to do so. If PA >> detects that SBC XQ does not fit in BT bandwidth, it should gradually drop >> quality. > > Maybe we can implement disconnecting SBC XQ profile when problem happen > and connect again with SBC in Automatic quality. Which would already be covered if my suggestion of a config switch had been taken in consideration ;) And all this timeless discussion wouldn't happen... my 2 cents > > But there is another problem. People who chose high quality codec do not > want to see that application itself without their instruction decide to > change codec to low quality. This is reason why non-SBC codecs are used. > Because they provide one fixed quality which is same whatever bluetooth > adapter or headphone you will use. SBC is criticized for a long time > because current implementations automatically choose some quality which > is not under user control. So for these reasons there is SBC LQ, MQ, HQ > and XQ. You can choose what you want to use. By default is automatic > mode which decreasing quality. > > -- > Pali Rohár > pali.rohar@xxxxxxxxx > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss _______________________________________________ pulseaudio-discuss mailing list pulseaudio-discuss@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
