Editing Auditory system (section)

=== Outer ear ===
{{main|Outer ear}}
The folds of cartilage surrounding the ear canal are called the [[pinna (anatomy)|auricle]]. Sound waves are reflected and attenuated when they hit the auricle, and these changes provide additional information that will help the brain determine the sound direction.

The sound waves enter the [[auditory canal]], a deceptively simple tube.  The ear canal amplifies sounds that are between 3 and 12 [[kHz]].<ref name="pmid14714940" /> The [[eardrum|tympanic membrane]], at the far end of the ear canal marks the beginning of the [[middle ear]].