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Bluetooth SIG is making Auracast^TM broadcast audio implementation easier with official guides for developers.

If you haven’t heard of Auracast^TM broadcast audio yet, it’s time to fully embrace it. This revolutionary Bluetooth^® technology is transforming how our everyday devices broadcast and receive audio in public settings. Specifically, Auracast™ broadcast audio expands on traditional Bluetooth capabilities, moving from singular point-to-point device connections to simultaneous multi-device streaming. Instead of straining to hear important announcements at a busy airport or train station, Auracast^TM broadcast audio users can tune into a public channel to hear all announcements directly from their headphones or earbuds. It also means those with hearing impairments can navigate their world a little easier, as silent TVs in public venues, auditorium audio, and public counters can all be tapped into for a more assistive and augmented audio experience.

Yet Auracast^TM broadcast audio is just getting started. According to market research from Strategy Analytics, over 60 million locations stand to benefit from deploying Auracast broadcast audio, underscoring its broad potential. For developers, this opens up plenty of opportunities to create devices users can leverage to better connect and engage with the world around them.

How Developers Can Elevate Electronics with Auracast^TM Broadcast Audio

Besides its extensive use cases, Auracast^TM broadcast audio equips devices with comprehensive features that take their streaming and sharing capabilities to the next level:

• Multi-Device Broadcasting: As long as Auracast^TM receivers are within range, users can all tune into the same source of audio at the same time. The new LC3 codec Bluetooth^® LE Audio also supports low latency transmission to better match streamed audio to ambient sound.
• Multiple Audio Sources: In public settings, users may want to change what broadcast stream they want to listen to. Auracast^TM broadcast audio supports this functionality, enabling multiple users to join any audio stream within range.
• Simple Audio Sharing: Two or more users can use Auracast^TM technology to listen to the same stereo stream, eliminating previous barriers to wireless audio sharing. Gone are the days when only one receiving device could connect to a Bluetooth-enabled device at a time.
• Flexible Configuration: The Basic Audio Profile (BAP) application specification in Auracast^TM technology defines various Quality of Service (QoS) configurations to meet different audio quality and latency requirements. In this way, developers can tailor audio quality to align with specific use cases.
• Wide Coverage: Auracast™ broadcast audio offers coverage with theoretical ranges of up to over a kilometer, enabling developers to create audio broadcasting solutions that can cover large spaces like stadiums, museums, and large conference centers.
• Interference Resistance: Auracast™ broadcast audio is engineered to perform consistently even in crowded wireless environments, using CSA #2 frequency hopping technology and retransmission mechanisms, to deliver clear audio, every time.

With these attributes, developers can do a lot with Auracast^TM broadcast audio. Recently, the Bluetooth Special Interest Group (SIG) published comprehensive developer guides to help developers achieve more seamless implementation.

Guides for Auracast^TM Broadcast Audio Implementation

Before developers jump into designing products compatible with Auracast^TM broadcast audio, there are a few key components that must be considered:

• Auracast™ Receivers: These are devices that deliver sound directly to the user, such as hearing aids, earbuds, headphones, and soundbars. Proper design and implementation are essential for these receivers to consistently provide high-quality audio, regardless of the listening environment.
• Auracast™ Transmitters: These consist of devices such as TVs, smartphones, PCs, tablets, and A/V systems that broadcast the audio streams Auracast^TM receivers pick up. A well-designed transmitter should have considerable range, low latency, and minimal interference to be effective.
• Auracast™ Assistants: These are remote user interfaces that enable listeners and broadcasters to have control over their audio environment. Auracast^TM assistants offer adaptable features that can be built into a wide variety of products, providing developers with a high degree of creative freedom to tailor the experience to specific needs.

Bluetooth SIG provides several insightful guides to help developers create products that facilitate Auracast^TM broadcast audio connections. Outlining best practices, technical specifications, and ideal software and hardware structures, these resources eliminate the guesswork in developing trailblazing audio products.

How to Design Auracast Earbuds

How to Build an Auracast™ Transmitter

How to Build an Auracast™ Assistant

Auracast™ Simple Transmitter Best Practices Guide

Developing Auracast™ Receivers With an Assistant Application for Legacy Smartphones

For more information on Auracast^TM broadcast audio or to stay up-to-date on the latest developments, visit bluetooth.com/auracast/.

Power Your Auracast^TM Products with Telink

As a member of the Bluetooth SIG, Telink knows a thing or two about Auracast^TM broadcast audio. Our team has been instrumental in developing it, working with other industry leaders to break current limitations and tap into technology's full potential. Whether you're developing receivers, transmitters, or assistants, Telink provides the expertise and solutions to help you succeed in your creative endeavors. Explore our solutions today and start building the future of audio, one product at a time.

Visit Telink’s wiki to learn more about our development tools or contact us directly today.