I dont know if you saw my other post. Me and another guy were talking about how we could create a buzzing noise in our ears. Guess you can too. We had quite a bit of discussion about it. The guys twin could also do it as well
http://www.astralpulse.com/forums/viewtopic.php?t=14709
http://www.astralpulse.com/forums/viewtopic.php?t=14709