Hearing aids

Hearing aid parts and accessories

Last updated on:

Reading time: 3 mins

Author: EarPros Team

Hearing aids are intricate devices designed to improve auditory experiences for those with hearing loss. In Australia, where hearing health is a critical aspect of well-being, understanding the various hearing aid parts is essential for choosing the right device and maintaining its effectiveness. This article delves into the components of hearing aids, their functions, and answers frequently asked questions about hearing aid parts and accessories.

Internal parts of a hearing aid: essential components

Understanding the internal hearing aid pieces is crucial to appreciating how these devices function to improve hearing. The essential components of a hearing aid work together to amplify sound and enhance clarity for the wearer. Below is a breakdown of key hearing aid parts names and their roles in this complex process.

Hearing aid microphone

The microphone is a critical component of any hearing aid, as it captures sound from the environment. There are two main types of microphones used in hearing aids: directional and omnidirectional. Directional microphones focus on sounds coming from a specific direction, usually in front of the user, which helps in noisy environments. Omnidirectional microphones, on the other hand, capture sound from all directions, providing a more natural listening experience. Typically located on the outer part of the hearing aid, microphones play a vital role in the device's overall performance.

Amplifier

The amplifier is responsible for increasing the volume of the sound captured by the microphone. There are two types of amplifiers: analog and digital. Analog amplifiers simply increase the volume of all sounds, while digital amplifiers process the sound signal to enhance speech and reduce background noise. The importance of the amplifier cannot be overstated, as it ensures that the sound is loud enough for the user to hear clearly. By boosting the sound signal, the amplifier helps users with hearing loss to perceive sounds more effectively.

Speaker (Receiver)

The receiver, or speaker, converts the amplified sound into an audible signal and delivers it into the ear canal. The placement and design of the receiver can vary depending on the type of hearing aid. For instance, in BTE and RIC hearing aids, the receiver is located in the ear canal, while in ITE and ITC models, it is housed within the hearing aid itself. The receiver's function is crucial, as it directly affects the sound quality and clarity that the user experiences.

Batteries

Hearing aids are powered by batteries, which can be either disposable or rechargeable. Disposable batteries need to be replaced regularly, while rechargeable batteries can be recharged overnight. Proper handling and maintenance of batteries are essential to ensure the hearing aid functions optimally. Users should be aware of the battery life of their hearing aids and follow the manufacturer's guidelines for replacement and charging.

Doctor performing hearing level assessment in the office

Test your hearing health for free

It's crucial to be proactive about your health. Act now by scheduling a complimentary consultation to protect your hearing well-being.

Visit the nearest store

External parts of a hearing aid

Body cover or casing

The body cover houses all internal components and comes in various sizes and colors. It is designed to fit comfortably behind the ear or inside the ear canal, depending on the hearing aid style.

Button or switch

Many hearing aids feature a button or switch that allows users to adjust settings or change programs. This can include volume control or different listening modes tailored to specific environments.

Wire

In some hearing aid styles, a thin wire connects the main body to the speaker. This wire transmits power and signals, ensuring seamless communication between components.

How do hearing aids work?

Hearing aids work by amplifying sound to improve hearing. They consist of a microphone that picks up sound waves, a processor that converts these waves into electrical signals, and a speaker that amplifies and transmits the sound into the ear. Modern hearing aids also feature advanced technology to filter background noise, enhance speech clarity, and adjust to different listening environments. By converting external sounds into clearer and more manageable audio, hearing aids help individuals with hearing loss experience a richer, more connected auditory world.

Common hearing aid spare parts and accessories

To keep your hearing aids functioning at their best, it's essential to regularly replace key hearing aid spare parts. Items such as earmolds, wax guards, and sound tubes play crucial roles in ensuring comfort, protecting against debris, and maintaining sound quality. Proper maintenance of these spare parts helps extend the life and effectiveness of your hearing aids.

Earmolds

The earmold is a part of the hearing aid that fits inside the ear canal, holding the device in place and directing sound into the ear. Earmolds are often custom-made to ensure comfort and effectiveness, using materials such as silicone or acrylic. The customization of earmolds is important, as a well-fitted earmold can significantly enhance the user's hearing experience by providing a secure and comfortable fit.

Wax guards and hearing aid filters

Wax guards and filters protect the hearing aid from earwax and debris, ensuring that the device functions properly. Regular cleaning and replacement of these components are necessary to maintain the hearing aid's performance. By preventing earwax from entering the hearing aid, wax guards and filters help prolong the device's lifespan and ensure clear sound quality.

Domes

Reusable earpieces placed on the hearing aid's speaker. They require regular replacement to maintain hygiene and performance.

Sound tubes

Connect the hearing aid to the earpiece and should be replaced every few months to avoid issues with sound transmission.

Telecoil (T-Coil)

Enhances hearing in public settings by picking up electromagnetic signals from telephones and PA systems.

Volume control and program buttons

Volume control and program buttons allow users to adjust the sound level and switch between different listening programs. These controls are usually located on the hearing aid for easy access. Advanced features, such as Bluetooth and remote control, offer additional convenience, enabling users to adjust their hearing aids via smartphones or other devices. These features enhance the usability and functionality of hearing aids, making them more adaptable to various listening environments.

Advanced features and technologies

Noise reduction and feedback cancellatio

Noise reduction and feedback cancellation are advanced features that enhance sound clarity. Noise reduction technology minimizes background noise, making it easier for users to focus on speech. Feedback cancellation prevents the annoying whistling sound that can occur when amplified sound is picked up by the microphone. These features are crucial for providing a comfortable and clear listening experience, especially in noisy environments.

Directional microphones

Directional microphones improve hearing in specific directions, allowing users to focus on sounds coming from a particular source. Adaptive directionality adjusts the microphone's focus based on the environment, enhancing the user's ability to hear in various settings. This technology is particularly beneficial in situations where multiple sounds are present, such as in a crowded room or at a social gathering.

Connectivity features

Modern hearing aids often come with connectivity features such as Bluetooth and wireless streaming. These technologies allow users to connect their hearing aids to smartphones, tablets, and other devices, enabling them to stream audio directly to their hearing aids. Compatibility with various devices enhances the functionality of hearing aids, providing users with a seamless and integrated listening experience.

Artificial intelligence and machine lear

Artificial intelligence (AI) and machine learning are revolutionizing the hearing aid industry by providing personalized hearing experiences. AI can adapt to the user's preferences and make real-time adjustments based on the listening environment. Examples of AI integration include automatic volume adjustments, noise reduction, and speech enhancement. These technologies offer a more intuitive and customized hearing experience, improving user satisfaction and comfort.

How do hearing aids work?

Hearing aids operate through a three-part mechanism:

Sound Capture: The microphone picks up environmental sounds.
Signal Amplification: The amplifier increases the signal strength.
Sound Delivery: The speaker converts the amplified signal back into sound, delivering it to the ear.

This process allows users to experience enhanced auditory environments, tailored to their specific hearing needs.

With you on your journey to better hearing.

It's time to finally treat your hearing loss. Sign up for a free consultation with a licensed hearing care professional today to determine if you have hearing loss. It’s the start of your journey towards better hearing.

EarPros benefits:

it's 100% risk free.
best partner with more than 1.000 stores

First name

Last name

Phone number

Postcode

By clicking the “Submit” button below, I provide my consent to be called or texted through an automated dialing system, by EarPros.com at my number provided on this form. I understand that the calls and/or texts will be in reference to hearing products, that my consent is not required in order to purchase, and that EarPros.com and Data Controller companies will transfer my data to operate in my state.

Thank you for submitting your request

We will get in touch with you as soon as possible.

Types of hearing aids

When choosing a hearing aid, it's important to understand the different styles available and how they fit into your ear. Below is an overview of the most common types of hearing aids and their key features:

Behind-the-Ear (BTE): Positioned behind the ear with a tube directing sound into the ear canal. This type is versatile and suitable for various levels of hearing loss.
In-the-Ear (ITE): Fits snugly inside the ear, covering a larger portion of the outer ear. ITE aids are suitable for a variety of hearing losses and offer more space for controls.
Receiver-in-Canal (RIC): A compact version of BTEs, with the receiver placed directly in the ear canal.
In-the-Canal (ITC): Custom-molded to fit partially within the ear canal. ITC aids are less visible than BTEs and are suitable for mild to moderate hearing loss, with controls that may be slightly more challenging to manipulate.
Completely-in-Canal (CIC): Designed to fit entirely within the ear canal, making them nearly invisible. CIC aids are ideal for those seeking discreet hearing solutions, but their small size may limit battery life and feature options.

Parts of a BTE Hearing Aid

A behind-the-ear (BTE) hearing aid consists of several key parts. The earmold or earhook fits behind the ear and channels sound into the ear canal. The main body, which rests behind the ear, houses essential components including the microphone that picks up ambient sounds, the amplifier that strengthens these sounds, and the receiver that transmits the amplified sound into the earmold. Additionally, there is a battery compartment that supplies power to the device, and controls that allow for adjustments to volume and settings.

Parts of an ITE Hearing Aid

An in-the-ear (ITE) hearing aid has a shell that fits within the outer ear and contains all of its components. This includes the microphone that captures sound from the environment, the amplifier that boosts the sound signal, and the receiver that converts the amplified signal into audible sound. The battery compartment powers the device, and controls are used for adjusting the volume and settings.

Parts of a RIC Hearing Aid

A receiver-in-canal (RIC) hearing aid includes several components. The behind-the-ear unit contains the microphone for capturing ambient sounds, the amplifier to enhance the sound signal, and the battery compartment to provide power. The receiver is positioned in the ear canal and connected to the behind-the-ear unit by a thin wire. There are also controls for making adjustments to volume and programs.

Parts of an ITC Hearing Aid

An in-the-canal (ITC) hearing aid features a shell that fits partially in the ear canal. It includes a microphone located near the front of the device to capture sound, an amplifier to boost the sound signal, and a receiver that delivers the amplified sound into the ear canal. The battery compartment provides power, and controls are typically smaller and less accessible for adjustments.

Parts of a CIC Hearing Aid

A completely-in-canal (CIC) hearing aid is designed to fit entirely within the ear canal. Its components include a microphone that captures sound as it enters the canal, an amplifier to boost the signal, and a receiver that delivers the amplified sound directly to the eardrum. The controls are minimalistic, with adjustments often requiring a small tool or a remote control.

Which hearing aid is right for me?

Choosing the right hearing aid depends on your hearing loss level, lifestyle, and preferences. Behind-the-Ear (BTE) aids are powerful and versatile, ideal for severe loss. In-the-Ear (ITE) aids offer a balance of visibility and function for various hearing losses. Receiver-in-Canal (RIC) aids are discreet and high-performing, suitable for mild to moderate loss. In-the-Canal (ITC) aids are less visible and provide moderate control, while Completely-in-Canal (CIC) aids are the most discreet but may lack extensive features. An audiologist can help you choose the best option for your needs.