Pulseaudio
Usage
Demo sounds:
/usr/share/sounds/freedesktop/stereo/locate .ogg
Play (paplay can't play mp3):
paplay /usr/share/sounds/freedesktop/stereo/bell.oga
paplay -d bluez_output.C8_7B_23_9D_AA_8A.1 /usr/share/sounds/freedesktop/stereo/bell.oga
Show general info about pulseaudio (including default sink/source):
pactl info
List all configured pulseaudio components (including soundcards):
pactl list
List available sinks:
pactl list short sinks
pactl list sinks # Very verbose
Configure default sink:
pactl set-default-sink bluez_output.C8_7B_23_9D_AA_8A.1
Configure volume:
pactl set-sink-volume 0 +5%
pactl set-sink-volume 0 -5%
Mute speaker/output (sink) or mirocphone/input (source):
pactl set-sink-mute 0 toggle
pactl set-source-mute 1 toggle
Issues
Device/sink suspended
https://unix.stackexchange.com/a/171925
Disable module-suspend-on-idle in either .config/pulse/default.pa or
/etc/pulse/default.pa.
Troubleshooting
https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting
Debug output:
systemctl --user stop pulseaudio.socket pulseaudio.service
pulseaudio -v