Emergency audio reset on OS X / macOS when faced with loss of audio

restart_audio.sh

#Use at your own risk. No warranties expressed or implied. YMMV. Drive responsibly. Eat healthy.

#for ZSH, I typically put these in my .zshrc
function restart_audio() {
  command sudo killall coreaudiod &&
  sudo launchctl unload /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist &&
  sudo launchctl load /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist &&
  echo 'Audio daemon restarted'
}

#alternately just run this in your terminal:
#sudo killall coreaudiod &&
#sudo launchctl unload /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist &&
#sudo launchctl load /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist &&
#echo 'Audio daemon restarted'