Educational information, not medical advice. This article is written to help you understand common ear and hearing issues. It is not a substitute for professional diagnosis or treatment. If your symptoms are severe, sudden, or persistent, please consult a qualified doctor or audiologist. For urgent symptoms (sudden hearing loss, bleeding from the ear, severe pain with dizziness, or a head injury), seek medical care the same day.

Your own voice sounds loud, hollow or echoey because a blocked ear canal traps low-pitched vibrations from your own speech. This is called the occlusion effect. It is common, it is not a fault, and an audiologist can usually fix it with a vent, a different dome or a programming change.

The direct answer

If your own voice sounds boomy, hollow or too loud when you wear a hearing aid, the cause is almost always the occlusion effect. When something fills the ear canal, the low-pitched vibration of your own voice, which normally escapes through the open canal, gets trapped and is heard louder inside your head. It is a fitting issue, not a defect, and it can usually be fixed in one visit.

Why it happens

When you speak, sound travels through your bones and tissues as well as through the air. With an open ear, the low-pitch part of that vibration leaks out of the canal. With a hearing aid or earmould sealing the canal, it has nowhere to go. You hear a booming, blocked version of your own voice. Chewing and swallowing can sound thunderous for the same reason. It is the same effect as speaking with your fingers pressed in your ears.

Who is most affected

People with good low-frequency hearing but a high-frequency loss, since their low pitches are still perfectly audible.
Wearers of custom in-ear aids or closed domes and earmoulds.
New users. Many find it fades as the brain gets used to the new sound over a few weeks, but a persistent problem should be corrected rather than tolerated.

How an audiologist fixes it

Open or vented dome: lets low-frequency vibration escape. This is the most common fix on receiver-in-canal aids.
Larger vent in a custom shell or earmould: the same idea in a custom product.
Deeper insertion or a longer shell: sealing further in the bony part of the canal reduces the vibration.
Programming: lowering gain at the low pitches that are causing the boom, or using the aid's built-in occlusion management.
Checking the fit: a shell or dome that is too tight or wrongly shaped can make it worse.

See our guide to ear moulds vs domes for how these parts change the sound.

A trade-off worth knowing

A bigger vent reduces the boom but can let in more feedback (whistling) and reduce how well the aid can amplify low pitches. Your audiologist balances the two based on your audiogram. If you have a more severe loss, a tighter fit may be needed and some occlusion may be unavoidable.

What you can do now

Give a new aid two to four weeks of daily wear; many people adapt.
Note when it is worst (speaking, chewing, all the time) and tell your audiologist.
Do not stop wearing the aids. Book an adjustment instead. Our tips for new hearing aid users explain what to expect.

If your own voice still sounds wrong, book a fine-tuning visit at one of our clinics or through a home visit. A small change often makes a large difference. Start with a free hearing test if you have not been assessed recently.

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