Bluetooth LE Audio and Auracast: the new wireless sound
Bluetooth LE Audio is the new generation of wireless audio built on Bluetooth Low Energy with the LC3 codec: better sound with less power. Auracast is an LE Audio feature that lets one device broadcast sound to any number of nearby earbuds or speakers.
In plain words
Classic Bluetooth audio is like a phone call: one phone, one pair of earbuds. Auracast is like a radio station: the TV in a sports bar, a tour guide or a teacher "goes on air", and anyone with compatible earbuds "tunes in" and listens. The LC3 codec is like being able to speak more clearly with less effort.
How it works
- LE Audio uses the energy-efficient part of Bluetooth (Low Energy).
- The LC3 codec carries sound better than the old SBC at the same or lower bitrate.
- Each earbud gets its own stream - more stable and with lower latency.
- An Auracast transmitter broadcasts audio like a station, with no pairing needed.
- Listeners join by picking the broadcast from a list or scanning a QR code.
Where you'll see it
LE Audio and Auracast support is found in new flagship phones, some earbuds and hearing aids, and some TVs and speakers. Specs say "Bluetooth 5.3/5.4, LE Audio, LC3, Auracast".
Does it matter when buying
For now it is a promise for the future: both the phone and the earbuds need to support it. But for people with hearing aids, LE Audio is already very useful. If you are buying earbuds to keep for a long time, LE Audio support is a plus.
Myths
- Myth: LE Audio means worse quality because it is "Low Energy". Reality: At the same bitrate, the LC3 codec sounds better than the old SBC.
- Myth: Auracast works with any earbuds. Reality: Only with ones that support LE Audio and Auracast.
FAQ
Do my earbuds support Auracast?
Check the specs or firmware updates from the manufacturer.
Where can I listen to Auracast?
In the future, at airports, sports bars, theatres and on tours; for now, between compatible devices.
Can I share music with a friend?
Yes, Auracast lets you broadcast audio to several pairs of earbuds at once.