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Bluetooth LE Audio unveiled: 4 key features

Bluetooth SIG (Special Interest Group) has unveiled LE Audio, the next-gen audio transmission technology enabled by Bluetooth, which brings enhanced audio performance, support for hearing aids and audio sharing.

Bluetooth audio will be available in two operation modes after LE Audio is officially released, which will operate on the Bluetooth Low Energy (LE) radio and — the second one — Classic Audio will operate on Bluetooth Classic radio (BR/EDR).

In addition to supporting the development of similar audio products and use cases as Classic Audio, LE Audio will also bring some new features as well as performance improvements.

“With close to one billion Bluetooth audio products shipped last year, wireless audio is the largest Bluetooth market. The launch of LE Audio is a prime example of how the Bluetooth community is driving technology and product innovation and enabling delivery of even better and more capable Bluetooth audio products,” said Mark Powell, CEO of Bluetooth SIG.

Better quality and lower power consumption

LE Audio uses the Low Complexity Communication Codec (LC3) that ensures higher quality audio even at low data rates and also brings more flexibility to the developers.

“Developers will be able to leverage these power savings to create products that can provide longer battery life or, in cases where current battery life is enough, reduce the form factor by using a smaller battery,” said Manfred Lutzky, Head of Audio for Communications at Fraunhofer IIS.

Bluetooth LE Audio unveiled: 4 key features you should know about
Source: Bluetooth SIG

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Multi-stream audio

Multi-stream audio on Bluetooth LE Audio will enable developers to create more seamless products that provide better stereo imaging experience, make switching between audio sources smoother as well as improve other products like truly wireless earbuds. This feature allows “multiple, synchronised audio streams” between the source device — a smartphone — and multiple audio sink devices.

Hearing Aid support

One of the most promising things Bluetooth LE boasts of is adding support for low power, high-quality hearing aids with multi-stream capabilities. LE audio will bring wireless calling and listening to hearing devices.

“LE Audio will be one of the most significant advances for users of hearing aids and hearing implants. Within a few years most new phones and TVs will be equally accessible to users with hearing loss,” said Stefan Zimmer, Secretary-General of EHIMA, the European Hearing Instrument Manufacturers Association.

Audio Sharing

Another important feature that LE Audio brings alongwith is the ability to broadcast audio stream from a source device to an unlimited number of audio sink devices. The audio sharing can be location-based as well as personal.

Personal audio sharing will allow users to share audio via Bluetooth with others around them. Location-based sharing enables users to share Bluetooth audio in public venues such as bars, gyms, airports, conference centres, and others.

“Location-based Audio Sharing holds the potential to change the way we experience the world around us. People will be able to select the audio being broadcast by silent TVs in public venues, and places like theatres and lecture halls will be able to share audio to assist visitors with hearing loss as well as provide audio in multiple languages,” said Peter Liu of Bose Corporation and member of the Bluetooth SIG Board of Directors.

The exact specs for Bluetooth LE Audio will be released throughout the first half of 2020.

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