Toggle the microphone mute via PulseAudio
Execute in a terminal window.
./togglemute.sh [muteOnOff] [showNotification]
Where
muteOnOff 0 to unmute, or 1 to mute; defaults to 0
showNotifications 0 to not show notifications, or 1 to show a desktop notification; defaults to 0
Example:
./togglemute.sh 0 1
Will mute the microphone and popup a small, temporary notification that indicates the microphone is now muted.