Crypted LVM and beep tones

Hi,

I have to crypt my harddisk for my working laptop. Allthough it is no 
big problem to enter the encryption password some seconds after grub I 
wonder if a acustical signal could be played that tells me that the 
password prompt is displayed. Also a signal about successfully entered 
the password or not would be really cool.

Does anyone know if acustical signals are possible for the described 
situation? Beep tones like for grub would be absolutely enough.

Cheers,

   Schoepp