Refer: https://www.mankier.com/1/pactl#Commands-set-sink-input-mute
To Mute Microphone
pactl set-source-mute @DEFAULT_SOURCE@ true;alert "microphone muted"
To Unmute Microphone
pactl set-source-mute @DEFAULT_SOURCE@ false;alert "microphone live"
Refer: https://askubuntu.com/questions/26068/how-do-you-mute-from-the-command-line
To mute Speakers
pactl set-sink-mute @DEFAULT_SINK@ true
To unmute Speakers
pactl set-sink-mute @DEFAULT_SINK@ false
To Toggle, you need to find the right value for N, just start at 1 and increment
pactl set-source-mute N toggle
pactl set-source-mute 2 toggle

