http://en.wikipedia.org/wiki/Sound_localization http://en.wikipedia.org/wiki/Sound_localization There's a lot more to it than that, and it's not just something

http://en.wikipedia.org/wiki/Sound_localization http://en.wikipedia.org/wiki/Sound_localization There's a lot more to it than that, and it's not just something that occasionally works. The outer-ear notch filtering is also used in vertical localization.