Visual AND audio bells are incredibly annoying. I DON'T CARE that I hit backspace 3 times when there were only 2 characters in the terminal! I KNOW you can't tab-autocomplete because I can see that you HAVEN'T DONE IT!
I want NO BELLS! Of any variety! All the solutions I see online are to turn the visual bell on or off, which inversely turns the audio bell off or on. I want NEITHER BELL!
This is on Ubuntu 12.04 in screen.
It's not the "BEEP!" from the speaker on the motherboard or whatever. It's a "Boink!" sound, clearly a pre-recorded sound effect.
Alright, apparently this question doesn't belong here. In case anyone discovers it on the internet anyway, I got what I wanted by turning off the visual bell (which turns on the audio bell) and then also going to System Settings -> Sound -> Sound Effects -> Selecting both mute check boxes.