Comment 14 for bug 1183145

I've tried this with NO effect:

" down vote

Try sed 's/; default-sample-rate = 44100/default-sample-rate = 96000/g' -i /etc/pulse/daemon.conf

That and sudo gedit /etc/pulse/default.pa and adding tsched=0 to load-module module-udev-detect so it becomes load-module module-udev-detect tsched=0 solved the issue for me.

For reference, the commands were put to my attention at https://wiki.archlinux.org/index.php/PulseAudio#Glitches.2C_skips_or_crackling."

from here: http://askubuntu.com/questions/191403/sometimes-strange-audio-distortionpeeping-scratching-ubuntu-12-04