LE Audio & Auracast: The next Generation of audio Technology

Wireless audio technology is undergoing its biggest shift since 'Bluetooth' first launched in 1999. While most people are quite familiar with traditional Bluetooth powering their headphones and earbuds, a new generation of technology is quietly redefining how we connect, listen, and share sound with each other.

LE Audio (short for Low Energy Audio) is the latest Bluetooth standard. Finalised by the Bluetooth Special Interest Group in July 2022, it delivers higher-quality sound, improved battery life, and major accessibility upgrades. One of its standout features is Auracast, a new broadcast mode within LE Audio that lets a single device stream audio to multiple headphones or hearing aids at once. This has huge potential for home entertainment, group listening, and assistive audio in public venues.
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So what exactly makes LE Audio and Auracast different from what you’re using now and why does it matter? This guide breaks down how it works and what it means for phones, TVs, hearing aids, and public audio experiences.

​What is LE Audio and How It Works

LE Audio is a major redesign of wireless audio that uses Bluetooth Low Energy radio enhanced by Bluetooth 5.2 and 5.3. Unlike classic Bluetooth, it offers a much more efficient, versatile platform for modern audio needs.

Developed with input from consumer electronics and hearing aid industries, LE Audio features the new Low Complexity Communication Codec (LC3), delivering better sound quality at lower bit rates while reducing power consumption.
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This new Bluetooth capability enhances audio quality, battery life, and user experience across devices like wireless earbuds and hearing aids.

Auracast Broadcast Audio and How It Works

Auracast represents the broadcast audio functionality of LE Audio and stands as one of its most revolutionary features. This auracast technology enables devices like TVs, public address systems, or event venues to transmit audio streams that any person with compatible wireless devices can choose to join.
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Using auracast broadcast audio is remarkably simple for users. They scan or select from available auracast broadcasts on their bluetooth devices, similar to connecting to a Wi-Fi access point. The connection process is intuitive and secure, with encryption protecting audio content while maintaining ease of access.

​Transformative Applications

Auracast broadcasts enable numerous applications that improve audio accessibility and user experiences:
Public Venue Assistive Listening: Airports, gyms, theaters, and other public spaces can broadcast audio streams that users access through their own bluetooth headphones or hearing aids, vastly improving clarity and convenience compared to traditional assistive listening systems.

Multi-Language Support: Museums, conferences, and cinemas can broadcast several language tracks simultaneously, allowing attendees to select their preferred language through their personal devices.

Group Audio Sharing: Users can share their audio streams directly with friends, enabling multiple people to listen to the same content simultaneously through their individual devices while maintaining personal volume control.
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Unlimited Scalability
Theoretically, auracast can support an unlimited number of listeners, restricted only by the device capabilities and radio environment constraints. Early pilot deployments have demonstrated robust real-world functionality even in RF-congested environments, proving the technology’s viability for widespread adoption. This scalability makes auracast particularly valuable for large venues and public spaces where traditional audio solutions struggle to serve diverse audiences effectively.

​LE Audio and Auracast in Hearing Aids

The hearing aid industry was a key driver behind LE Audio development, aiming to replace power-hungry, proprietary solutions with an open, efficient standard. LE Audio enables direct, hands-free streaming from devices like smartphones and TVs to bluetooth hearing aids, using the same low power consumption protocols and high audio quality found in wireless earbuds.

Auracast broadcast audio further enhances accessibility by allowing hearing aids to connect to public venue audio streams, improving clarity and convenience in places like airports and gyms.

Leading brands such as Signia and Oticon plan to adopt LE Audio and Auracast technology quickly, promising life-changing audio experiences with adaptive streaming tailored to hearing loss.
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While LE Audio requires newer hardware (Bluetooth 5.2+), current flagship devices and operating systems are beginning to support it. However, widespread adoption will take time due to legacy device incompatibility and gradual software updates enabling these advanced features.

​Future of LE Audio Technology

The Bluetooth SIG and industry experts expect LE Audio-enabled products to grow rapidly between 2025 and 2030, as more people upgrade their devices and discover the many benefits this technology offers.
When Will LE Audio Become Mainstream?
We can look forward to LE Audio becoming a common feature in our everyday gadgets within the next few years. Smartphones, TVs, and wireless earbuds, from high-end to mid-range models are expected to include LE Audio support as standard. This timeline reflects the natural pace of new device releases and the software updates needed to unlock all LE Audio’s features.

Changing the Way We Experience Audio in Public Spaces
As Auracast gains popularity, public places like airports, gyms, and theatres will start offering richer, more accessible audio experiences. Imagine tuning in to a clear, personalised audio stream through your own headphones while waiting for your flight or working out at the gym. Early trials show that users love this convenience, and venues are beginning to see the value in making these upgrades.

A Bright Future for Hearing Aids
The hearing aid market is set for exciting growth as manufacturers embrace LE Audio and new regulations support these advances. This shift marks one of the biggest leaps in hearing aid technology in years, helping more people enjoy better hearing with devices that are more effective and less stigmatising.

How the Competitive Landscape Is Evolving
While companies like Apple and Qualcomm will keep developing their own specialised audio technologies, experts believe LE Audio will serve as the foundation for wireless audio going forward. Think of LE Audio as the reliable baseline that supports a more unified and compatible ecosystem, with brands adding their unique touches on top for premium features. All in all, LE Audio is poised to become the backbone of wireless audio, making our listening experiences better, simpler, and more connected than ever before.

​FAQ's

How Do I Know If My Device Supports Auracast?
Auracast requires support for Bluetooth LE Audio, which depends on both hardware and software. Specifically, your phone, earbuds, or hearing aids must support Bluetooth 5.2 or later, and your operating system must implement LE Audio protocols.

Most recent flagship phones from 2023 onward (such as Samsung Galaxy S23/S24 and Google Pixel 7/8) support LE Audio, though not all have enabled Auracast yet. Apple has not yet announced full Auracast support on iPhones as of 2025.
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You can check your device’s Bluetooth version in the specifications on the manufacturer’s website, or search your phone model along with “Bluetooth 5.2” or “LE Audio” to confirm compatibility.

Do TVs Have Auracast?
Some newer TVs and media transmitters are beginning to support Auracast, particularly in the premium and commercial segments. However, this is still early in the adoption cycle. Brands like LG and Samsung have begun integrating LE Audio and Auracast into select 2024–2025 models, but full support across TV product lines is expected to roll out more broadly between 2025 and 2027.

For now, dedicated Bluetooth Auracast transmitters can be added to existing TVs to broadcast audio to compatible earbuds or hearing aids. These are likely to become more common in public venue setups before home entertainment systems catch up.

How Do I Know If Auracast Is Available Where I Am?
Auracast broadcast availability depends on public venue implementation, not just your personal device. Look for physical signage, digital prompts, or a list of available Auracast broadcasts within your device’s Bluetooth or hearing aid companion app. Similar to connecting to standard bluetooth or Wi-Fi, Auracast streams appear in a list of available broadcasts when enabled nearby.

Airports, gyms, conference centres, and museums are early adopters, often trialling the technology before rolling it out widely. As the ecosystem grows, Bluetooth SIG is working with venues to create clear visual indicators and standards for broadcast availability, much like the Wi-Fi symbol is recognised today.

​Conclusion

LE Audio is more than just an upgrade to classic Bluetooth, it’s a complete rethink of wireless audio. It extends battery life, improves sound quality, and offers life-changing features for hearing aid users. Beyond individual devices, it transforms audio experiences in public spaces and enables seamless multi-device connections. Though adoption will take a little time, its benefits like Auracast broadcast audio and improved accessibility make it a game-changer. LE Audio sets a new standard for wireless sound by making devices work better together and lowering the costs for manufacturers.
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Here at K&M Hearing Solutions is embracing the latest Bluetooth LE Audio and Auracast systems to bring our clients the most advanced hearing technology and advice available. Get in touch with our team to discuss how this breakthrough can support your hearing needs and daily lifestyle.

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