I am having the exact same high-pitched whining with Edgy and my mic using the audio on my Asus MB:
00:0d.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2) -- high pitching noise on microphone 82801G https://launchpad.net/bugs/68021 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
