Comment 20 for bug 359361

You could try making a .asoundrc file in your home directory, or modifying
the parameters in the alsa.conf (I think) in /etc/modprobe.d/. if you look
online for how to make your own asound.conf, you will find the alsa wiki
which has lots of info.

On Aug 21, 2010 7:31 AM, "xanadoo" <email address hidden> wrote:
the problem seems to worsen over time. i did a fresh install of the
system, no distortion whatsoever was present. the following days slight
dístortion occured, by now (~ a week later) the situation is almost as
bad as before. all i ever changed in that time was setting levels with
alsamixer (muting analogue outputs and setting SPDIF to -0dB damping),
and changing the standard device and volume using pulse. i did not play
anything but 44.1kHz though, so neither alsa nor pulse should have felt
the need to resample.

since this distortion accumultes over time my suggestion is that some
config file must be the cause. any of you have an idea where to try
deleting and recreating files that might cause this?

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ALSA SPDIF Digital output clipping / crackling during playback
https://bugs.launchpad.net/bugs/...