5.25 How do I turn down the bell volume in Emacs running under X?

On X Window system, you can adjust the bell volume and duration for all programs with the shell command xset.

Invoking xset without any arguments produces some basic information, including the following:

usage:  xset [-display host:dpy] option ...
  To turn bell off:
      -b                b off               b 0
  To set bell volume, pitch and duration:
       b [vol [pitch [dur]]]          b on