пт, 5 окт. 2018 г. в 12:36, Karl Ove Hufthammer <[email protected]>:
> Hi! > > I use my NVIDIA graphics card as a combined graphics and sound card, > connected to my 5.1 home theatre system via an HDMI cable (something > which works surprisingly well). Using the default audio profiles in > ‘pavucontrol’, I can easily switch between 5.1 sound (e.g. for DVDs) and > stereo sound, which is great. > Hello! I think you forgot to specify the version of PulseAudio... > > The 5.1 profile (‘hdmi-surround-extra1’) also work fine for *some* > stereo material, mainly music. But for *most* stereo material, the > upmixing makes everything sound too echoey (this is typically a problem > for movies with just stereo sound and for vocal-heavy music), so I > usually just use the stereo profile (‘hdmi-stereo-extra1’) for stereo > material. > There is a setting that prohibits upmixing (i.e. filling the rear channels with a copy of front). It is called remixing-use-all-sink-channels=false. But it is a relatively recent addition. It does exist in Ubuntu 18.04. > > But I have noticed than when playing music or videos using the stereo > profile, the sound is missing quite some oomph, i.e. the bass is *much* > weaker (compared to the same material played using the 5.1 profile). > > I guess the reason is that PulseAudio outputs a pure stereo sound, and > my home theatre system doesn’t redirect enough of the low-frequency > sound to my subwoofer. And unfortunately, my (not too expensive) home > theatre system doesn’t have any options for increasing this (for HDMI > audio). > Are you sure that the subwoofer gets anything at all in this mode? Anyway the suggestion is to try the 5.1 profile and remixing-use-all-sink-channels=false. -- Alexander E. Patrakov
_______________________________________________ pulseaudio-discuss mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
