82-timer-based-to-interrupt-driven 268 Bytes
#!/bin/sh -efu

# Changed audio scheduling from timer-based to
# interrupt-driven to prevent unwanted crackle.

pafile="/etc/pulse/default.pa"

if [ -f "$pafile" ]
then
	sed -i 's/^load-module module-udev-detect$/load-module module-udev-detect tsched=0/' "$pafile"
fi