06.02.2015 16:41, David Henningsson wrote: > > > On 2015-02-04 18:45, Alexander E. Patrakov wrote: >> Sorry for a possibly-stupid question, but... >> >> Which part of PulseAudio is supposed to disable the effect if the user >> plugs headphones in? Or is it yet to be written? > > Hrm, that is actually a good question. In theory, I would expect > module-switch-on-port-available to switch profiles between 2.0 and 2.1 > as headphones are plugged in and out, but in practice, > > - I'm not 100% sure if our "don't switch to HDMI" might prevent > switching from 2.1 to 2.0 when headphones are plugged in, and > > - As the 2.0 profile is available on speakers, that will continue to > be selected when headphones are unplugged. > > So, while this is not directly related to whether there is an LFE filter > or not - we already have a 2.1, 5.1, etc, profiles - indeed the problem > might become worse with the LFE filter. > > OK, so we are on the same page. Also don't forget about the existing virtual-surround sink, as it also exposes the fake LFE channel. Because of the issues quoted above, I'd prefer not to make the LFE remixer the default, until a mechanism appears to associate the possible sound enhancements (such as: "on this port an LFE speaker exists, thus LFE remixing makes sense", and, in the future: "this ultimately leads to headphones, thus virtual-surround makes sense", "this has an impulse response measured, thus convolution with this set of wav files makes sense") with ports, persistently. -- Alexander E. Patrakov
