If you want to help, just listen to the first file that is linked to on this page:
http://philomel.com/musical_illusions/e ... lusion.php
It's a .WAV file, just in case somebody has problems with it.
All you have to do is listen to the 30 second audio sample with stereo headphones on (kinda important) and post (or PM if you want) your gender, dominant hand, and what you heard. The audio sample is simply an alternation (in both ears) between two tones an octave apart. The majority of people should hear:
(This is hidden so it doesn't corrupt the data - read after you have listened to the file)
Any help you guys could give would be greatly appreciated.
P.S. If you guys feel like being extra-helpful, recruit some friends and family to listen.
Many thanks in advance to those who help.