Changing the volume of the sounds in bash

[Darragh]

Is it possible to change the volume of the sounds heard while using the Bash prompt? When I for example hit the back space at the start of a line I hear a very loud beep. This beep is great but In an office environment I'd like it to be a bit lower. 

Oh by the way, I got speakup working during the weekend. I have some more tweeking to do before I'll say I have it working for definit but its looking good. I have a few things disabled in the kernel at the moment and I'm going to re-enable them one by one to see what if any is causing the problem.

Darragh