On Sat, 2016-05-21 at 22:37 +0500, Alexander E. Patrakov wrote: > The current LFE crossover filter removes low frequencies from the > main > channels and puts them into the LFE channel with the wrong amplitude. > It is not known for sure what is the correct relative amplitude > (acoustic > measurements are required with real hardware), and changing that > might > introduce a new bug, "it clips the LFE channel". > > So just disable the feature by default until a better understanding > emerges how it should work. This, essentially, returns the defaults > to their state as of PulseAudio 6.0. > > Some more observations: > > - Most of available active analog speakers on the market do the > necessary crossover filtering already, and HDMI receivers can be > configured to do that, too, so a crossover filter in PulseAudio is > harmful in these use cases. > > - The "laptop with a builtin subwoofer" use case requires manual > configuration anyway because the default crossover frequency (120 Hz) > is > wrong for laptop speakers. > > - Finally, Windows 10 with a built-in USB audio driver does not > synthesize > the LFE channel given a 5.1 card and a stereo audio stream by > default. > > Hides: https://bugs.freedesktop.org/show_bug.cgi?id=95021 > Signed-off-by: Alexander E. Patrakov <patrakov at gmail.com> > --- >  man/pulse-daemon.conf.5.xml.in | 4 ++-- >  src/daemon/daemon-conf.c       | 4 ++-- >  src/daemon/daemon.conf.in      | 4 ++-- >  src/pulsecore/core.c           | 4 ++-- >  4 files changed, 8 insertions(+), 8 deletions(-) Thanks! Applied. -- Tanu
