For years, nay, decades (literally – two!), I have visual bell enabled in my terminals whenever possible, be it a humble XTerm or Gnome Terminal. Recently, after I switched from Unity to Gnome 3, I had an audible bell (over stereo speakers) in Gnome Terminal.
My searches up to now always seem to lead into the wrong direction: How to enable the audible bell or how to disable the whole thing completely. That’s not my intention. When at the prompt, when I press backspace too often or just before auto-completion, I want the terminal window to flicker, and I do not want to hear anything. Where is this setting hidden?