1. First, let's look at what an open hearing aid is and what a closed hearing aid is

An ‘open’ hearing aid is one that keeps your ear canal open.
A ‘closed’ hearing aid is one that seals your ear canal with a tightly fitting custom mould or rubber/silicone earplug, allowing little air in or out.

2. Effects of open hearing aids on sound quality

Open hearing aids are useful for early intervention for people with mild to moderate hearing loss. They amplify high-frequency sounds while still allowing low-frequency sounds to enter the ear naturally. This configuration helps the user maintain spatial awareness and natural sound quality, making the transition to using a hearing aid easier.
In the real world, open hearing aids typically provide more natural sound quality because they don't block the ear canal. By combining natural sound with amplified sound, open hearing aids create a more balanced listening experience.
Open hearing aids prevent the occlusion effect, the sensation of hearing your own voice as if you were talking into a bucket.
The occlusion effect (also known as the plugged ear effect), where the user has the sensation of hearing their voice as if they were hearing it in a barrel when wearing hearing aids or earplugs or headphones. After wearing hearing aids, the user's own chewing, swallowing, talking and breathing sounds will go through bone conduction causing the outer ear canal wall to vibrate, and the low frequency part of it will be amplified because of the occlusion effect, the sound can not leave from the ear canal, and constantly transmitted to the ear drums, the user will constantly hear the sound that is both noisy and hollow.

3. Hearing in noise

Open hearing aids can be problematic in noisy environments because they allow background noise to enter the ear along with the amplified signal. Therefore users with a slightly more severe hearing loss or those who need to perform daily activities in some very noisy environments are recommended to use closed hearing aids.

Open-fit hearing aids feature an open design that allows sound to escape from the ear canal. This can result in reduced overall sound quality, particularly when listening to high-volume or bass-heavy audio.
In contrast, closed-fit hearing aids offer superior sound isolation, delivering a richer, fuller audio experience during streaming.
Ultimately, both closed-fit and open-fit hearing aids have their own distinct advantages; the right choice depends on your personal habits, preferences, and professional advice.
The TE103 CIC hearing aid not only looks just like standard Bluetooth earbuds, but its charging case also features a built-in drying function to promote hygiene and extend the device's lifespan. Additionally, the case supports remote sound pickup—allowing you to place it near a TV to help capture audio for the user. It can be tailored to your specific listening needs, balancing effective hearing compensation with hearing protection.
This durable hearing aid utilizes advanced algorithms to reduce noise and deliver clear sound quality, while also offering four distinct modes. It is accompanied by an easy-to-use app.