So whenever I receive a notification from one of my many program (for instance, Mail app), there is always a static noise that continues for about ten seconds after the notification sound. Now, I'm sure this is not a defect of any sort, and is probably a way for the mac to detect incoming audio, or something like that. But this is becoming increasingly bothersome, and I was wondering if there is any way to cut the static noise off completely, or at least shorten it. Is there? Thanks!