[pulseaudio-tickets] [Bug 42351] VERY loud hiss from speakers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42351

Maarten Bosmans <mkbosmans at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Severity|blocker                     |critical
           Priority|highest                     |high
         AssignedTo|pulseaudio-bugs at lists.freed |mkbosmans at gmail.com
                   |esktop.org                  |

--- Comment #2 from Maarten Bosmans <mkbosmans at gmail.com> 2011-11-16 02:27:19 PST ---
How is the stereo amplifier connected? From the log it looks like a USB
headset.

There's no resampling or channel remap going on, so the main candidates are
sample conversion (float->s16le) and software volume adjustment.

There was a bug in the volume code, but you shouldn't hit that with
PULSE_NO_SIMD=1 set. Can you verify that the problem also occurs with
pulseaudio 1.1 or git master?

The other thing to try would be to have both sink-input and sink volumes at
100%, so no software volume adjustments are done.

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