[pulseaudio-tickets] [Bug 95021] LFE channel not synthesized properly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95021

--- Comment #2 from Ahmed S. Darwish <darwish.07 at gmail.com> ---
This can be reproduced in the following manner:

1) Create a 5.1 null sink:

   $ pactl load-module module-null-sink sink_name=NULL_5.1 \
     channels=6 \
     channel_map=front-left,front-right,rear-left,rear-right,front-center,lfe

2) Play out the null sink output through its monitor:

   $ parec -d NULL_5.1.monitor | pacat

3) Play a high-bass audio file, like this one:

   http://darwish.chasingpointers.com/pub/sine-wave-50Hz-0.8amplitude.mp3
   (Produced using Audacity tone generator)

(4) High-bass should be heard.. Open `pavucontrol' and redirect the
    mp3 player output to the NULL_5.1 sink.

    Result: almost all of the bass is stripped

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