CES 2020: The latest Bluetooth standard LE Audio is released

Corsca Bluetooth earphoes

The audio industry will usher in major changes in the next 20 years

CES 2020

On January 7th, Beijing time, the Bluetooth Special Interest Group (SIG) released a new generation of Bluetooth audio technology standard-low-power audio LE Audio at CES2020 in Las Vegas, which can not only improve Bluetooth The audio performance can also provide more powerful support for hearing aid applications, and support audio sharing.

1 Audio is the largest Bluetooth solution field

At the beginning of the meeting, Ken Kolderup, Vice President of Global Marketing of Bluetooth Technology Alliance, introduced the development status of Bluetooth technology.

He said that Bluetooth is a solution-oriented technology, and Bluetooth technology has been widely used in audio, data, positioning, and control. Systems and other fields, and Bluetooth technology is constantly innovating.

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Among the many fields of application of Bluetooth technology, audio is the largest field of Bluetooth solutions, with annual product shipments reaching 1.27 billion, and this data is excluding the mobile phones, tablets, laptops and other platform devices, the number is very alarming.

In the past 20 years, the use of audio technology has been nothing more than making calls, listening to music, watching videos, and voice interaction.

Its carriers include headphones, car stereos, headphones, speakers, and other speakers. The sound sources come from mobile phones, tablets, and laptops. , TV, and other multimedia sources, developers have extended Bluetooth audio to the limit.

So, what is the development goal of the next generation of Bluetooth audio?

2. LE Audio-a new generation of Bluetooth audio technology standards

The Vice President of Global Marketing of the Bluetooth Technology Alliance pointed out that the goal of next-generation Bluetooth audio will mainly focus on improving performance, increasing support and leading the future, and thus introduced a new generation of Bluetooth audio technology standard-LE Audio, which will be based on Bluetooth low energy wireless communication (Bluetooth Low Energy), and the previous Classic Audio will be based on classic Bluetooth wireless communication (Bluetooth Classic).

LE Audio can support the same audio products and use cases as Classic Audio, and its new features can improve performance and bring new use scenarios.

LE Audio will use the new high-quality, low-power audio decoder LC3, support for multi-stream audio (Multi-Stream Audio), support for broadcast audio technology, and provide strong support for hearing aids.

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Low complexity communication codec LC3 (Low Complexity Communications Codec), sampling rate: 8, 16, 24, 32, 44.1, 48kHz, bit rate: 16-320kbps, frame rate: 7.5, 10ms.


LC3 has the characteristics of providing high sound quality under low data rate conditions and will provide developers with tremendous flexibility so that they can better balance key product attributes such as sound quality and power consumption during product design.

Multi-Stream Audio

Multi-Stream Audio (Multi-Stream Audio) function will realize multiple independent audio stream transmissions between a single audio source device (smart device) such as a smartphone and a single or multiple audio sink devices.

This allows the device to provide a better stereo experience and makes switching between multiple audio source devices smoother.

In addition, LE Audio provides more powerful hearing aid support based on low power consumption, high sound quality, and multiple streaming capabilities.

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Another important upgrade is that LE Audio supports Broadcast Audio technology, which enables a single audio source device to broadcast one or more audio streams to an unlimited number of audio receiver devices. Bluetooth audio sharing can be based on either individuals or locations.

3. What can the new Bluetooth audio technology standard bring to end-users?

In general, the new generation of Bluetooth audio technology standard LE Audio can bring users a better audio experience, including higher quality sound, lower power consumption, providing richer hearing aids, and location-based audio services.

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What is impressive is the practical application of LE Audio in hearing aids and audio sharing.

There are several interesting usage scenarios: in the waiting room, gymnasium, conference hall, movie theater, and other places with public screens, audio can be broadcast through Ways to allow people to receive different audio signals can not only help the hearing impaired but also provide translation services in different languages.

Corsca Bluetooth earphoes

The main feature of the new Bluetooth audio technology standard LE Audio is the new high-quality, low-power audio decoder LC3, which supports Multi-Stream Audio and broadcast audio technology, providing powerful support for hearing aids.

For developers, this advantage can be used to create products with longer battery life or to meet the current power consumption requirements, by using smaller batteries to optimize the product design size.

Consumers are expected to enjoy Bluetooth wireless transmission services of higher quality, more convenient use, and more diverse application scenarios. It can be said that LE Audio was born for the TWS headset market.

For more exciting photo reviews on-site, many chip manufacturers have followed the LE Audio standard and launched their own solutions:

Corsca Bluetooth earphoes

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