PulseAudio 7.0 To Enable LFE Remixing By Default

Written by Michael Larabel in Multimedia on 30 March 2015 at 10:12 AM EDT. 19 Comments
Queued up in Git for the next version of PulseAudio, v7.0, is the enabling of LFE remixing by default after some upstream work was done by Canonical developers working on Ubuntu.

David Henningsson of Canonical imported some PulseAudio code from Chrome OS and its audio server to then clean-up and re-factor the LFE code while also adding features like rewind support and enabling the LFE filter in the re-sampler.

After cleaning up this Low-Frequency Effects (LFE) filter code, LFE remixing was enabled by default within PulseAudio. Hui Wang of Canonical wrote, "Since we have a workable lfe filter, it is time to enable the lfe remixing by default."

PulseAudio's LFE support was previously hidden behind the enable-lfe-remixing configuration option. The Low-Frequency Effects channel is found on modern home theater equipment for sending low-pitched, deep sounds to the subwoofer. This big PulseAudio LFE code drop was committed to upstream PulseAudio Git over the night and will be part of the PulseAudio 7.0 release in the months ahead.
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