How to change an audio output device by a keyboard hotkey (or a command shortcut)?
130127
Shortcut to switch  between Analog Stereo output & HDMI audio output
157542
Force sound's output on speakers
100885
How to change the default volume name in the /media path?
64321
How to create a virtual audio device and stream audio input with it
38799
Ubuntu 18.04: Audio doesn't work unless I switch between outputs
28105
Using Apple Script to Manage Sound Output Selection
115770
How to disable microphone from auto adjusting its input volume
16685
Windows 7 / 8 tool for amplifying sound / equivalent to pavucontrol?
129057
How can I record sound before outputting?
92931
Can I access internal microphone input level via Terminal?
89545
How do I toggle headset/headphone mode manually?
104288
Selected Sound Output Device Not Persisting Between Reboots in gnome-control-center
84387
Terminal command to set audio volume?
152290
How do I change the start up sound?
99125
How to associate multimedia keys to Foobar2000?
38492
Change Windows sound volume via the command line
55431
"Dummy Output" No sound in Ubuntu 16.04