Behind-the-Ear (BTE)Hearing Aids

Behind-the-ear hearing aids

Behind the ear (BTE) hearing aids are one of the most common styles of hearing technology fitted today. These are hearing devices with the main body of the device behind the ear but affixed to ear canal with an earmould or dome or eartip. They typically use battery sizes 675 (blue sticker), 13 (orange sticker) and 312 (brown sticker).

The traditional style (BTE)

There are two types of BTE hearing aids. The first type, which is the traditional style, has its receiver located inside the main body of the hearing aid. The traditional BTE aid typically has an earmould and tubing. The BTE is currently one of the styles with the highest level of amplification, but its receiver size and power can be modified to be lower or higher to suit the requirements of the hearing loss. Its design allows the device to house more technology and features than smaller hearing aids, providing robust amplification and clearer sound quality. BTE hearing aids work by capturing sound through a microphone, processing it with a digital signal processor, and delivering the amplified sound to the ear through the earmold.

The open style derivative has thinner tubing with a dome on the end. Open-style hearing aids are good for users with mild to normal hearing thresholds in the low frequencies. As little to no amplification is needed in the low frequencies, the hearing aid doesn't need to fully occlude the ear canal. The reduced occlusive effect results in a comfortable and cosmetically appealing hearing aid for the user. 

The receiver in the canal (RIC) style 

The second style has the receiver housed at the end of a wire, usually situated within a dome or earmould inside the ear canal. It is called the receiver in the canal (RIC) hearing aid or the receiver in the ear (RIE) hearing aid. The RIC Is like a BTE because the main body of the device still sits behind the ear.  A wire connects the main body of the hearing aid to the dome or mould inside the ear. This design allows for a more natural sound quality and reduces the risk of feedback. RIC hearing aids are typically smaller and lighter than standard BTE models, offering a more discreet and comfortable option. They are suitable for individuals with mild to severe hearing loss and often come with advanced features, such as Bluetooth connectivity and rechargeable batteries.

Similarities and differences between the traditional and RIC style of hearing aids

The open style BTE looks similar to the RIC hearing aid, as both have similar-sized tubing. The primary difference between the two is that the open-style BTE has a tube, with a hole that can be cleared out end to end with a line the size of a fishing line. One end of the open tube has a screw top to be affixed to the hearing aid, and the other end of the tubing has the dome or custom earmould.  Whereas a receiver-in-the-canal aid has a wire and not a tube. One end has the connecting electric pin for connecting to the hearing aid, and the other end has the receiver, which is encased within an earmould or dome. The RIC is susceptible to more moisture problems due to it's receiver being in closer proximity to moisture in the ear.

How Behind the Ear Hearing Aids Work

The microphone in a BTE hearing aid picks up sound from the environment and converts it into electrical signals. These signals are then processed by an analogue-to-digital converter, which transforms them into digital data. The digital signal processor analyses the data, filtering out noise and enhancing speech frequencies to make conversations easier to understand. This processed sound is converted back into an analogue signal by a digital-to-analogue converter and sent to the receiver, which delivers the amplified sound to the ear through the earmold.

 One of the key components of BTE hearing aids is the earmold. Earmolds are custom-made to fit the wearer's ear canal perfectly, ensuring a comfortable fit and optimal sound delivery. They can be made from various materials, including silicone and acrylic, and come in different styles to suit individual preferences and needs. Earmolds play an important role in determining the overall effectiveness of the hearing aid, as they help direct sound into the ear canal and prevent feedback.

Advantages of Behind the Ear (BTE) Hearing Aids

BTE hearing aids can accommodate mild to profound hearing loss, making them suitable for a wide range of users. Their larger size allows for more powerful amplifiers and bigger batteries, ensuring better performance and longer battery life.

Another advantage of BTE hearing aids is their durability and reliability. The design of these hearing aids makes them less susceptible to damage from earwax and moisture, which can be common issues with smaller, in-the-ear devices. Additionally, BTE hearing aids are easier to clean and maintain, contributing to their longevity. Their robust construction and effective moisture resistance make them ideal for individuals with active lifestyles or those who live in humid environments.

Comfort is another key benefit of BTE hearing aids. The earmold is custom-fitted to the user's ear, providing a snug and secure fit without causing discomfort. The behind-the-ear placement of the device itself ensures that it remains stable and unobtrusive, allowing users to wear glasses or other accessories without interference. BTE hearing aids come in various sizes and styles, enabling users to choose a model that best suits their aesthetic preferences and needs.

Cons of Behind the Ear Hearing Aids

One of the primary disadvantages is their visibility. Because BTE hearing aids sit behind the ear and are often larger than other types of hearing aids, they can be more noticeable. This may be a concern for individuals who prefer a more discreet hearing solution or feel self-conscious about wearing a visible device.

Another potential disadvantage is the risk of feedback. Feedback occurs when amplified sound leaks out of the earmold and is picked up by the microphone, creating a whistling or buzzing noise. BTE hearing aids are designed to minimise feedback, but it can still occur, especially if the earmold does not fit properly, if there is wax buildup or if the device is not correctly positioned. Feedback can be annoying and disruptive, impacting the overall hearing experience.

Lastly, BTE hearing aids may not be suitable for individuals with specific ear shapes or conditions. Some users may find the earmold uncomfortable or experience irritation from prolonged use. Additionally, people with very small or unusually shaped ear (atresia) or ear canals may have difficulty achieving a proper fit, which can affect the effectiveness of the hearing aid. In such cases, alternative types of hearing aids, such as in-the-ear (ITE) or completely-in-canal (CIC) models, may be more appropriate.

Maintenance and Care for Behind the Ear Hearing Aids

Proper maintenance and care are essential to ensure the longevity and optimal performance of your behind the ear hearing aid. Regular cleaning and upkeep can prevent common issues, such as earwax buildup and moisture damage, and keep your device functioning effectively. Establishing a routine for cleaning and checking your hearing aid can help identify potential problems early and prevent costly repairs.

Cleaning your BTE hearing aid involves several steps. First, remove the earmold from the device and wash it with mild soap and warm water. Avoid using harsh chemicals or alcohol, as they can damage the earmold material. Dry the earmold thoroughly before reattaching it to the hearing aid. Use a soft brush or cloth to gently clean the device itself, paying attention to the microphone and battery compartment. Regularly check for earwax buildup and remove it using a specialized cleaning tool or brush.

Moisture is a common issue that can affect the performance of BTE hearing aids. To prevent moisture damage, avoid exposing your hearing aid to water and humidity. Remove your hearing aid before showering, swimming, or engaging in activities that may cause excessive sweating. Consider using a hearing aid dehumidifier or drying kit to remove moisture from your device overnight. Additionally, store your hearing aid in a cool, dry place when not in use.

Regular maintenance also includes checking the battery and replacing it as needed. Most BTE hearing aids use disposable batteries, which should be replaced when the device starts to lose power or performance. Rechargeable batteries are also available and can be a convenient option for some users. Follow the manufacturer's instructions for battery replacement and care to ensure your hearing aid continues to function effectively.

Common Myths About Behind the Ear Hearing Aids

There are several myths and misconceptions about behind the ear hearing aids that can influence individuals' decisions and perceptions. Addressing these myths can help provide a clearer understanding of BTE hearing aids and their benefits.

One common myth is that BTE hearing aids are bulky and uncomfortable. While it's true that BTE hearing aids are larger than some other types, advancements in technology have led to more compact and lightweight designs. Modern BTE hearing aids are designed to be comfortable and unobtrusive, with custom-fitted earmolds and flexible tubing that ensure a secure fit. Many users find them comfortable enough to wear all day without discomfort.

Another misconception is that BTE hearing aids are only for severe hearing loss. While BTE hearing aids are powerful and can accommodate profound hearing loss, they are also suitable for individuals with mild to moderate hearing impairment. The versatility of BTE hearing aids allows them to be customized to meet various hearing needs, and they offer advanced features that can enhance the listening experience for users with different degrees of hearing loss.

A third myth is that BTE hearing aids are outdated and lack modern features. In reality, BTE hearing aids are equipped with cutting-edge technology that rivals or surpasses that of smaller hearing aids. Features such as directional microphones, noise reduction, feedback cancellation, and wireless connectivity are commonly found in BTE models. Additionally, many BTE hearing aids offer Bluetooth compatibility, allowing users to connect to smartphones, televisions, and other devices for a seamless audio experience.

Cost for Behind the Ear Hearing Aids

The cost of behind the ear hearing aids can vary widely based on factors such as brand, features, and level of technology. On average, BTE hearing aids can range from £999 to £4600 per pair at Sonant Hearing. The benefits of improved hearing and enhanced quality of life can make it worthwhile. It's important to consider the long-term value of the hearing aid and how it can positively impact daily activities and communication.

 When evaluating the cost of BTE hearing aids, it's also important to consider additional expenses, such as maintenance, batteries, and accessories. Regular upkeep and occasional repairs may incur costs, so budgeting for these expenses is crucial. At Sonant Hearing we offer service plans or warranties that can help offset maintenance and repair costs, providing peace of mind and ensuring your device remains in optimal condition.

Conclusion

Behind the ear hearing aids have come a long way in terms of design, technology, and user experience. Their versatility, durability, and advanced features make them a popular choice for individuals with various degrees of hearing loss. By understanding how BTE hearing aids work, their advantages and disadvantages, and the different types available, users can make informed decisions about their hearing solutions.

 Looking ahead, the future of hearing aid technology promises even more exciting advancements. Innovations such as artificial intelligence, machine learning, and improved connectivity are expected to enhance the functionality and performance of hearing aids. AI-powered hearing aids can analyse and adapt to different listening environments in real-time, providing a more personalized and seamless hearing experience. Enhanced connectivity will enable users to integrate their hearing aids with smart home devices, health monitoring systems, and other technologies, further improving their quality of life.

In the coming years, we can also expect more discreet and comfortable designs, with continued focus on miniaturisation and ergonomic improvements. Rechargeable batteries and sustainable materials will become more prevalent, addressing environmental concerns and providing convenient options for users. As technology continues to evolve, behind-the-ear hearing aids will remain at the forefront of hearing solutions, offering users the ability to hear clearly and confidently in any situation.