What Is Auracast? Bluetooth Broadcast Audio, Explained
In short. Auracast is a Bluetooth capability for broadcasting audio. Instead of one phone sending sound to one pair of earbuds, a single source can send sound to any number of compatible devices nearby, including hearing aids that support it. It is expected to become a new form of assistive listening in public places, alongside hearing loops.
What it is
Classic Bluetooth links one source to one listener. Auracast, from the Bluetooth Special Interest Group, lets one source broadcast and many listeners tune in, a little like choosing a radio station. It belongs to the newer generation of Bluetooth audio known as LE Audio.
Where it may be used
- Public venues. Hearing a TV, announcement or talk directly in your own hearing aids or earbuds.
- Assistive listening. The Bluetooth SIG describes it as the next generation of assistive listening technology.
- Sharing. Several people listening to the same phone or TV at once.
How widely it is available depends on venues installing broadcast transmitters, so it is still early.
What you need to receive it
A receiving device that supports Auracast: some newer hearing aids, earbuds or headphones. Usually you also need a way to pick the broadcast, from the phone, a small assistant device or the hearing aid itself. Check with the hearing aid maker which models support it.
Auracast and hearing loops
Hearing loops send sound as a magnetic signal to hearing aids with a telecoil, and are already installed in many places. Auracast uses Bluetooth instead. For now, the two exist side by side. Telecoils and hearing loops explains the older system.
Key takeaways
- Auracast broadcasts audio from one source to many devices.
- It is part of the newer Bluetooth LE Audio generation.
- Receiving it needs an Auracast-capable hearing aid, earbud or headphone.
- Venue availability is still growing.
- Hearing loops and Auracast exist side by side.
Questions and answers
Can my hearing aids receive Auracast?
Only if they support it. Ask the hearing aid maker or the person who fitted them which models do.
Is Auracast the same as a hearing loop?
No. A hearing loop sends a magnetic signal picked up by a telecoil. Auracast uses Bluetooth.
Sources and further reading
This page draws on the following sources.
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This information is general and does not replace an examination by a qualified professional.