Auracast is a broadcast audio feature of Bluetooth Low Energy (LE Audio) that enables a single transmitting device to stream audio to multiple compatible receivers simultaneously, including hearing aids, headphones, earbuds, and smartphones. It is a trademark owned by the Bluetooth Special Interest Group (SIG).
Auracast forms part of the Bluetooth LE Audio standard introduced with Bluetooth 5.2 and represents a departure from traditional Bluetooth audio connections, which typically rely on one-to-one device pairing.
History
Development of Auracast began in the early 2010s within the Bluetooth SIG following collaboration with hearing aid manufacturers seeking improved wireless audio streaming with lower power consumption and broader compatibility.
A key requirement was the ability to deliver the same audio stream to multiple users simultaneously, unlike earlier Bluetooth implementations that supported only point-to-point connections. These efforts contributed to the development of Bluetooth LE Audio, within which Auracast provides broadcast audio functionality.
By the mid-2020s, Auracast began to be implemented...
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