Hi Perry, On Freitag, 21. April 2017 11:02:33 CEST Perry Halbert wrote: > As of today r66644 from SVN, audio is much improved but not fixed yet. > The stutter is improved but now there are popping issues. The > additional logging shows a greatly reduced amount of the stuttering due > to stream full but they still happen. > > Host Linux 64-bit guest Mint-17 64-bit and tried both ac97 and intel hd > audio. I sounds like the intel hd audio might be better than the ac97 to > my ears but can not provide empirical data to support the assumption. > > I don't do a lot with Windows these days but it appears that the audio > in a Win-7 guest has been acceptable all along if that is of interest to > you.
thank you for testing. Some status update regarding sound in trunk and in the 5.1.x branch: At the moment the code between trunk and 5.1 drifts away a little bit. In principle trunk has the more modern audio framework, in particular it moves more audio work from the EM threads (the VCPU emulation threads) to separate threads. This is good for the timing and therefore good for audio quality. Trunk audio didn't change for some weeks (it still needs improvements), therefore we are slightly surprised that you experience improvements with the latest trunk updates. I'm also not aware of any recent VMM updates which would improve timing... The 5.1.x branch still uses quite old audio code. We don't want to do fundamental changes in 5.1.x but we need to fix certain cases. Especially we are aware that Windows 10 AU guests don't work well with 5.1.x (including 5.1.20). Unfortunately fixing this is more complicated and conflicts with our goal to keep the changes in 5.1.x minimal. I can only say that we are trying to improve the situation with Windows 10 AU+ guests but we still don't have a final solution. Kind regards, Frank -- Dr.-Ing. Frank Mehnert | Software Development Director, VirtualBox ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | 71384 Weinstadt, Germany ORACLE Deutschland B.V. & Co. KG Hauptverwaltung: Riesstraße 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Komplementärin: ORACLE Deutschland Verwaltung B.V. Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister der Handelskammer Midden-Niederlande, Nr. 30143697 Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher _______________________________________________ vbox-dev mailing list vbox-dev@virtualbox.org https://www.virtualbox.org/mailman/listinfo/vbox-dev
