Improve audio quality with Pulseaudio on linux

Edit /etc/pulse/daemon.conf :

resample-method = src-sinc-best-quality
high-priority = yes
default-sample-channels = 2
default-sample-format = float32le
default-sample-rate = 48000
default-fragments = 8
default-fragment-size-msec = 5

And restart pulseaudio :

pulseaudio -k