Automator service for microphone mute key binding on Mac OS

micmute.workflow

on run {input, parameters}
	
	set inputVolume to input volume of (get volume settings)
	if inputVolume < 60 then
		set inputVolume to 60
		set displayNotification to "Microphone is unmuted"
		set speechMessage to "unmuted"
	else
		set inputVolume to 0
		set displayNotification to "Microphone is muted"
		set speechMessage to "muted"
	end if
	
	set volume input volume inputVolume
	say speechMessage
	display notification displayNotification
	delay 0.05
	
	return input
end run

Mac OS Mic Mute

Configuration

1. Create a new Automator service
2. Add an AppleScript panel and paste the code inside it
3. Save the workflow with the desired name (suggestion: "Mic Mute")
4. Go to > System Preferencies > Keyboard > Shortcuts > Services, find your service by the name and bind a keyboard shortcut for it (suggerstion: control ⌘ /)

Usage

When you press the shortcut in your keyboard, a notification will appear and Siri will say the new microphone status ("Muted" or "Unmuted"). If you press again, it will toggle the previous known state.