Sensation - How the ear works.

Sensation... The Ear Pages on NobelPrize.org and a nice animation

The organization that gives out the Nobel Prize has a great website about the ear and how it works.

If you're having trouble understanding the accessory structures and the cochlea this site is for you.

Here is a link to another animation about how the ear works
http://www.sumanasinc.com/webcontent/animations/content/soundtransduction.html