Assistive Listening Technologies

Available Assistive Listening Technologies

Assistive Listening Technologies are essential tools for improving speech clarity in spaces where acoustics or background noise make communication difficult.

In spaces like auditoriums, classrooms, houses of worship, or public venues, factors such as background noise, reverberation, and speaker-to-listener distance can make speech difficult to follow — even for individuals using hearing aids or cochlear implants.

Assistive Listening Technologies help to address this problem by delivering sound directly to the listener, cutting through noise and reverberation to enhance intelligibility.

For organisations, installing an effective ALS isn’t just good practice — it’s a key part of meeting accessibility requirements and creating environments that are inclusive.
A wide range of assistive listening technologies are available today, and navigating the options can often feel overwhelming. At IAHA, our goal is to make these systems easier to understand and to provide clear, practical guidance on choosing the right solution for your needs. The most commonly used assistive listening technologies include:

Hearing Loops

Hearing loops, also known as induction loops, are assistive listening systems that use electromagnetic fields to transmit sound directly to hearing aids and cochlear implants equipped with telecoils (T-coils).

More Information on Hearing Loops
More Information on Hearing Loops
Latency icon
Zero Latency
Feature icon
Direct Hearing Aid Integration
Feature icon
Simple to Use
Feature icon
Flexible, multi-environment use
Find out more about hearing loops

Infrared

Infrared (IR) systems are assistive listening technologies that use invisible light waves to transmit sound from a source to a receiver worn by the listener. These systems require a direct line of sight between the transmitter and receiver and are commonly used in places where privacy and signal containment are important.

More Information on Infrared
More Information on Infrared
Feature icon
Private
Feature icon
Low latency
Feature icon
Multi-Channel Audio
Feature icon
Good Alternative to Hearing Loops

FM / Radio

FM (radio frequency) systems are assistive listening technologies that use radio waves to transmit sound from a source to a receiver worn by the listener. These systems are less affected by physical obstructions and are well suited to settings where users may move around and can be used outdoors.

More Information on FM / Radio
More Information on FM / Radio
Feature icon
Flexible
Feature icon
Low latency
Feature icon
Can Be Used Outdoors
Feature icon
Relatively Simple Installation
FM / Radio

Audio Over WiFi

Audio over Wi-Fi systems are assistive listening technologies that transmit sound via a wireless internet connection to a listener’s personal device, such as a smartphone or tablet. These systems offer flexibility and discretion, making them ideal for venues where users prefer to use their own equipment and where Wi-Fi infrastructure is already in place.

More Information on Audio over WiFi
More Information on Audio over WiFi
Feature icon
Flexible
Feature icon
BYOD convenience
Feature icon
Discreet user experience
Feature icon
Flexible infrastructure use

Auracast

Auracast is a next-generation assistive listening technology that uses Bluetooth to broadcast audio from one source to many receivers, without the need for individual pairing. Compatible with hearing aids, cochlear implants, earbuds, and headphones, it enables users to connect directly to public or private audio streams.

More Information on Auracast
More Information on Auracast
Feature icon
Compatible with Many Devices
Feature icon
New & Emerging Technology
Feature icon
Low Barrier to Entry
Feature icon
Future-Ready Compatibility
Auracast

Why are Assistive Listening Technologies so important?

Assistive listening systems help to safeguard people who experience hearing loss. In law, their rights include:
Equality
Equality before the law without discrimination.
Inclusivity
Inclusive education and a decent standard of living.
Support
Support to participate in society and live in the community.
Accessiblity
Accessible physical environments and information.
If used correctly, such systems consistently meet or exceed nationally and internationally agreed performance standards.

How do I locate an Assistive Listening System?

Assistive listening technologies play a crucial role in enabling people with hearing loss to participate fully in public life. However, the presence of such systems is only beneficial if users know they are available. That’s where clear, consistent assistive listening signage becomes vital.

Because assistive listening technologies transmit audio signals that are invisible and inaudible without the proper receiver, signage is the key visual indicator that accessible audio services are available. Without clear signs, many people with hearing loss may remain unaware of the support available, missing out on improved hearing experiences.

Clear signage is often a legal requirement under accessibility laws worldwide, including the Americans with Disabilities Act (ADA) in the United States, the Equality Act in the UK, and similar legislation in Europe and Australia. These laws mandate that facilities inform visitors of the availability of assistive listening devices through properly displayed symbols.

Assistive Listening Signage
Why consistent signage matters.
Legal Compliance
In the United States, the ADA (Section 219) requires correct assistive-listening signage; similar rules apply across Europe, the UK and Australia.
User Confidence
Because loop, FM and IR signals are invisible and silent until received, the symbol is the user’s only cue that accessible audio is available.
Operational Clarity
Staff see the sign, know a system is installed, and can offer accessories or guidance without hesitation.
Finding an assistive listening system
Finding an assistive listening system
Finding an assistive listening system

What is a Telecoil?

A telecoil (or "T-coil") is a small copper wire loop embedded in many hearing aids and cochlear implants. It functions as an electromagnetic receiver, designed to detect signals from an assistive listening system.

When enabled, the telecoil bypasses the device’s microphone and directly converts the magnetic field generated by the loop into audio signals. This allows for clearer, more focused sound by minimizing ambient noise and enhancing speech transmitted through microphones or public address systems.

Simple to use
A telecoil lets you connect directly to hearing loops in public venues and at home with no extra equipment needed. Simply switch your hearing aid or implant to T-mode to tap into clear, direct sound.
Often Overlooked
Many hearing-aid and implant users are never informed that a telecoil exists. Unaware of it, they miss out on any benefits a Telecoil can provide.
Telecoil FAQs

Frequently
Asked
Questions
About
Telecoils

What is a telecoil?

A telecoil (or “T-coil”) is a tiny copper loop built into many hearing aids and all cochlear implants. When you switch to the “T” program, the device stops using its microphone and instead receives the magnetic signal broadcast by an assistive-listening system—most often a hearing loop, FM/RF, or infrared feed—and converts that signal directly into clear, high-fidelity audio.

How do I activate a Telecoil?

Switch your hearing aid to the T program when you’re in a looped area. This turns off the microphone and lets your aid pick up the loop’s magnetic signal for clearer sound. Switch back to normal to hear as usual.

If you need to hear both loop audio and ambient sound, e.g., conversation with someone beside you—choose the “MT” or “Mic+T” program if your aid offers it.

Why should a hearing aid include a telecoil?

A telecoil effectively doubles the versatility of your hearing device. It gives you instant, cable-free access to loop-equipped theatres, transport hubs, houses of worship, council chambers, museum tours, and even in-home TV loops. The result is markedly clearer speech with minimal background noise and no extra hardware to carry.

Isn’t Bluetooth sufficient?

Bluetooth is ideal for short-range links to a phone or tablet, but it is not the global standard for large-area assistive listening and often requires brand-specific accessories. A telecoil is universal: walk into any looped venue, flip to “T,” and you are connected.

How can I confirm whether my current aids have an active telecoil?

Check with your audiologist or your user manual. Many models highlight the feature with a “T” in the product name (e.g., miniRITE T) or list “telecoil” in the specifications, but the program may still need to be enabled in the clinic.

What should I specify when purchasing new aids?

Ask for access-ready instruments that include a Built-in telecoil. Ideally, a single button or app should let you switch between microphone, telecoil, and Auracast modes without neck-loops or dongles.

Using a Telecoil
How to use your Telecoil
1. Check your device
Confirm your hearing aid or cochlear implant has a built-in telecoil.
It’s often listed as “T” or “MT” in the manual or settings.
2. Find the "T" switch
Look for a physical switch, button, or app setting to toggle T-mode. Some devices switch automatically when near a loop.
3. Test It Out
Your telecoil will pick up sound in venues with hearing loops, or when using a neckloop provided by IR or FM systems. No extra equipment needed on your end.
FAQ

Some Frequently Asked Questions About Assistive Listening Systems

What is assistive listening technology?

Assistive listening technology (ALT) refers to tools and devices that enhance sound clarity for individuals who experience difficulty hearing. These technologies make it easier to understand speech, music, and environmental sounds, allowing for fuller participation in daily life at home, work, school, and public places.

Who can benefit from assistive listening technology?

ALT can be helpful for anyone experiencing hearing challenges—whether you have mild hearing loss or use hearing aids or cochlear implants. The right solution depends on your hearing needs and the environments where you need support.

What are assistive listening devices (ALDs)?

ALDs are personal devices designed to improve communication in small group settings or one-on-one conversations. They typically include a microphone for the speaker and a receiver or amplifier to help the listener hear more clearly. They’re especially useful in noisy places or for direct communication.

What are assistive listening technologies (ALTs)?

ALTs are designed for use in larger public spaces, such as theaters, places of worship, airports, or lecture halls. They capture sound from a microphone or sound system and send it directly to hearing aids, cochlear implants, receivers worn by the listener, or digital devices like phones. These systems minimize background noise and improve clarity.

What are the main types of assistive listening systems?

The three primary ALS technologies are:
Hearing loops: Use magnetic fields to transmit sound to hearing aids or cochlear implants with a telecoil setting.
FM or DM systems: Use radio signals to transmit sound from a source to personal receivers, often used in classrooms or meetings.
Infrared (IR) systems: Use light waves to send sound to a receiver. These require a clear line of sight and are often used in settings like cinemas or conference rooms.

How do hearing loops work?

A hearing loop system sends audio directly into a hearing aid or cochlear implant via a magnetic signal. Users must switch their device to the "T" (telecoil) setting to receive the signal. Hearing loops are commonly found in theaters, auditoriums, and other public venues.

What is a personal infrared loop system?

This system uses infrared light to wirelessly send sound to a portable receiver worn around the neck. The receiver has a built-in loop that sends the audio directly to a hearing aid’s telecoil. These are often available in classrooms or lecture halls.

Are there smartphone apps that help with hearing?

Yes. Many mobile apps offer features such as real-time captioning, sound amplification, or audio streaming. Some are designed to work with hearing aids or implants, while others function independently to improve listening in specific environments.

Can phones work with assistive listening technology?

Yes. By law, phones must be compatible with hearing aids. Most modern smartphones, including iPhones and Androids, offer either acoustic coupling (amplifies surrounding and phone audio) or telecoil compatibility (direct connection for clearer sound without background noise). Ask your audiologist if your device’s telecoil feature is activated.

Do I still need assistive listening devices if I use hearing aids?

Possibly. While hearing aids offer excellent amplification, they may not always be enough—especially in noisy environments or public venues. ALDs and ALSs complement your hearing aids by providing clearer sound in specific settings.

How do these technologies help in daily life?

Assistive listening tools make activities like attending religious services, watching movies, riding public transport, or participating in meetings more accessible. They reduce listening fatigue, improve comprehension, and help users feel more connected and independent.

Are public venues required to offer assistive listening systems?

In many countries, yes. Laws such as the Americans with Disabilities Act (ADA) in the U.S., the UK Equality Act 2010, and Australia’s Disability Discrimination Act require public facilities to provide ALS options for people with hearing loss.

Are there standards for assistive listening systems?

Yes. International standards like IEC60118-4 ensure that systems—especially hearing loops—are properly installed and effective. These regulations promote high-quality experiences and prevent low-performance installations that fail to meet users’ needs.

Which type of system is best?

It depends on the environment and the user’s preferences. Hearing loops are widely favored by users for their simplicity and effectiveness, but FM, DM, and IR systems also offer benefits in specific settings. A hearing care professional can help determine what suits your needs best.

How do assistive listening systems work with hearing aids?

Most systems transmit sound directly to hearing aids using a telecoil or Bluetooth feature. If your device has a telecoil, connecting to a hearing loop is often as simple as switching to the "T" setting. Otherwise, a neckloop or dedicated receiver may be needed.

Become an
IAHA Member
Whether you work in manufacturing, specifying, or installing assistive listening systems, or support people with hearing loss in your professional role, you’re welcome to join us.

IAHA membership is open to organisations involved in creating and installing assistive listening systems, as well as those supporting the interests of people with hearing loss. It doesn’t just include manufacturers of assistive technologies, but also influential groups and individuals working to improve hearing access across society.