What Is the Auditory System, and What Function Does It Serve?

The auditory system is a complex set of organs and tissues responsible for processing sound. Understanding how the auditory system works can help us better appreciate how we hear and process sound.

Medically reviewed by Erin Rushing, Au.D. — Owner & Audiologist in Houma, LA

Last updated: October 2026

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The auditory system is a complex set of organs and tissues responsible for processing sound. This system includes the outer and middle ear, the inner ear, and the brain. Understanding how the auditory system works can help us better appreciate how we hear and process sound.

Additionally, knowing about our auditory system can help us take steps to protect our hearing health. So, what exactly is the auditory system, and what does it do? Let’s find out!

What Does the Auditory System Do?

The auditory system is the part of the body in charge of hearing. It includes the ear, the auditory nerve, and the brain. The three sections of the ear are: the outer ear, middle ear, and inner ear.

Sound waves enter the outer ear and travel through the middle ear to the inner ear. The inner ear converts these vibrations into nerve signals that travel to the brain, where they are interpreted as sound. Hearing therefore involves both the ears and the brain. If complex sounds remain difficult to understand even with appropriately fitted amplification, targeted auditory therapy may help develop listening skills and clarity as part of an individualized rehabilitation plan.

Main Types of Hearing Loss

Hearing loss is classified into three types: conductive, sensorineural and mixed.

Conductive hearing loss occurs when there is a problem with the outer or middle ear, preventing sound waves from reaching the inner ear. Sensorineural hearing loss occurs when there is damage to the inner ear or the auditory nerve, which carries signals from the inner ear to the brain. Mixed hearing loss is having both a sensorineural and conductive hearing loss at the same time.

Common Causes of Hearing Loss

There are many different types of hearing loss. Some causes of hearing loss include exposure to loud noise, certain medications, aging, and hereditary conditions. Hearing loss can substantially negatively influence a person’s quality of life. It can make it challenging to communicate with others, participate in activities, and enjoy the world around them.

Bottom Line

If you think you may have a hearing loss, it is essential to see a doctor or audiologist for a hearing test. Hearing loss can significantly impact your quality of life, so getting treatment as soon as possible is necessary.

Learn what happens during a hearing test to see how we assess your hearing. Explore our comprehensive hearing evaluations in Houma. When your brain needs help processing speech in background noise, auditory therapy and rehabilitation services can provide guided listening practice and communication strategies alongside appropriate hearing care.

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