Blog
By NoFrills Group
February 19, 2019
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In these extraordinary times, new technologies are continually emerging to enhance our lives and connectivity. One such innovation is Auracast, a groundbreaking Bluetooth audio sharing technology that has gained significant attention.
So, what is Auracast? How does it function? And what differentiates it from other similar technologies? In this discussion, we’ll delve into these questions and provide a comprehensive understanding of Auracast.
Definition
Auracast is a cutting-edge feature introduced in the latest Bluetooth LE (Low Energy) Audio specifications. It enables the effortless sharing of audio between multiple devices, eliminating the need for extra apps or pairing steps.
In simple terms, Auracast allows a source device, such as a TV or smartphone, to broadcast audio streams to an unlimited number of receivers, including earbuds, speakers, or hearing aids. Users can easily choose which audio stream they wish to listen to.
History
Originally introduced in 2018, Auracast is essentially a rebranded version of a feature previously created by the Bluetooth Special Interest Group (SIG) known as “Audio Sharing.”
However, Auracast incorporates several significant improvements and enhancements compared to its predecessor, making it a more user-friendly and efficient technology. The Bluetooth SIG draws a comparison between this technology and radio signal transmission: a standard radio transmitter broadcasts a signal that allows multiple receivers within range to tune into it, thereby enabling a smooth audio-sharing experience.
How It Works?
Auracast leverages Bluetooth Low Energy to transmit audio streams from a source device to multiple receivers. This setup means that the source device and receivers don’t need to go through a pairing process, providing a seamless and hassle-free sharing experience.
Once activated, the source device begins broadcasting the audio stream via Auracast packets to all receivers within its range. The receivers can detect these packets, enabling users to choose which audio stream they wish to listen to.
Features
Multi-Device Connectivity
A key highlight of Auracast is its capacity to connect to multiple devices at the same time. This functionality allows you to stream audio from your TV to your earbuds, speakers, or hearing aids all at once.
To take advantage of this feature, the devices need to support Bluetooth 5.2 or later, and they must be compatible with the PBP specification within LE Audio. This ensures easy connections and switching without the need for additional pairing processes.
Low Latency
Auracast provides exceptionally low latency, ensuring that there is minimal delay between the audio being broadcast and when it is received by the devices.
This feature makes Auracast particularly well-suited for real-time applications, such as watching TV or gaming, where synchronization between audio and visual elements is crucial.
Energy Efficient
As its name suggests, Auracast uses Bluetooth Low Energy technology, making it an energy-efficient option for streaming audio. This means longer battery life for both the source device and receivers.
Wide Radius of Coverage
Auracast features an impressive range, allowing it to transmit audio to receivers across a wide area. This makes it ideal for events or gatherings where many people can listen to the same audio stream.
It is reported that an Auracast transmitter can be detected within a radius of approximately 30,000 square feet (2,787 square meters), making it a convenient choice for outdoor occasions.
Future Potential for Hearing Aids
Auracast technology has the capacity to change the hearing aid industry dramatically. Its multi-device connectivity and low latency capabilities could deliver a more seamless and improved audio experience for people with hearing impairments.
Furthermore, Auracast could remove the necessity for separate receivers or transmitters that are typically required for traditional hearing aids, resulting in a more discreet and user-friendly solution.
Takeaway
Auracast is a groundbreaking Bluetooth audio sharing technology that provides multi-device connectivity, low latency, energy efficiency, and extensive coverage. It has the potential to transform multiple industries, including home entertainment and hearing aids.
With its seamless and effortless streaming experience, Auracast is poised to change how we share and consume audio content, particularly benefiting users of hearing aids.