I have reproduced the sound, it happens from the live cd and it's constant pulsed sound.
I am adding the result of the ps auxww command. ** Attachment added: "ps auxww" http://librarian.launchpad.net/5832821/ps_auxww.txt -- Loud beep when installing feisty-desktop-i386 on DQ965COEKR motherboard https://launchpad.net/bugs/80535 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
