Have you ever watched a dog or cat turn its ears toward a sound? Many animals can move their ears to focus on what they want to hear. People can’t do that, but the shape of our outer ear still plays a big part in how we hear every day. At Hear SF on Geary Boulevard in San Francisco, owner and hearing aid dispenser Michael Martinez, NB-HIS, and our team consider ear shape when helping patients find hearing aids that fit well and sound natural.
What the Outer Ear Does
The visible part of your ear is called the pinna, or auricle. Its curves and folds work like a natural funnel, collecting sound and directing it into the ear canal. Together, the pinna and ear canal also boost certain sound frequencies that are important for understanding speech.
How Ear Shape Helps You Locate Sound
Sound reaches your ears slightly differently depending on where it comes from. The folds of your outer ear change incoming sound in small ways, and your brain uses those changes to tell whether a sound is in front of you, behind you, above or below. Having two ears adds another layer, because your brain compares the timing and loudness of sound between them.
Every Ear Is Different
No two people have exactly the same ears. The size and shape of the outer ear and ear canal vary from person to person, and even between your own left and right ear. These differences are usually harmless, but they matter when it comes to hearing aids.
Why Ear Shape Matters for Hearing Aids
- Comfort: A good fit keeps hearing aids comfortable to wear all day.
- Sound quality: A secure fit helps prevent sound from leaking out, which can cause whistling.
- Natural hearing: Some hearing aid styles and features are designed to work with the ear’s natural shape to help you tell where sounds come from.
- Custom options: Custom earmolds and in-ear styles can be shaped to match your ear exactly.
Find a Comfortable Fit at Hear SF
If your hearing aids feel loose, uncomfortable or whistle often, the fit may need adjusting. Call or text Hear SF at 415-319-7301 to schedule a visit.