[pulseaudio-discuss] [RFC PATCH 0/6] LFE filter

Alexander E. Patrakov patrakov at gmail.com
Wed Feb 4 09:45:49 PST 2015

29.01.2015 03:14, David Henningsson wrote:
> Hi!
> Hui and I have been working on some LFE filter patches lately, and this
> is our first draft for review/feedback.
> First, I have greedily stolen the math from CRAS, because CRAS is BSD and
> as I understand we don't have a problem with merging more liberal licenses.
> The LFE filter is implemented in the resampler, which means it is done for
> every sink-input rather than every sink - this might mean some additional
> CPU processing if many different streams play back at the same time, but
> putting it on the sink side would disable the possibility to mix a 2.0 stream
> with a 2.1 stream.
> The rewind part is very drafty and untested, and I'm not sure I choose the
> best design here. But at least this is something that could act as base for
> discussion.

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?

Alexander E. Patrakov

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