What is LE Audio? The Bluetooth technology on AirPods

AirPods Pro 2 earbuds will support Bluetooth LE Audio technology, so what is the technology? And what is its role of it? The following will give you one by one to explain.

First of all, the Bluetooth Technology Alliance (SIG) in 2020 announced a new generation of Bluetooth audio technology LE Audio, there will be more and more Bluetooth products to support Bluetooth low-power audio technology LE Audio, with LC3 audio coding technology, to improve the Bluetooth headset has low latency, high quality and low power consumption, which Apple will also be for the AirPods Bluetooth headset Apple will also support LE Audio and LC3 encoding for the AirPods Bluetooth headset.

What is LE Audio?

LE Audio is a new generation of Bluetooth low-power audio technology introduced by the Bluetooth SIG at the 2020 International CES that delivers audio in a Bluetooth low-power state, helping to improve the range and performance of Bluetooth headsets, while also introducing the new generation of Bluetooth audio coding LC3 (Low Complexity Communication Codec) It is also conducive to hearing aid products, which can achieve low latency and high sound quality.

Bluetooth Low Power Audio LE Audio is a brand-new audio technology developed by the Bluetooth Technology Alliance in the past 20 years. It has undergone 8 years of development and two core specification updates and is considered the largest development project ever, allowing developers to develop Bluetooth high quality, new topology, and power-saving audio devices through 23 different file configurations and service specifications. Bluetooth standard.

What does LE Audio have to do with LC3?

So what exactly is the correlation between LE Audio Bluetooth low-power technology and LC3 Bluetooth audio coding? In fact, LE Audio and LC3 are inextricably linked. Simply put, as long as a Bluetooth headset supports LE Audio technology, it will be equipped with LC3 Bluetooth audio coding, which can achieve the delivery of high-quality Bluetooth coding and allow Bluetooth headsets to have low power consumption and low latency characteristics.

Differences between LE Audio and Bluetooth

The actual LE Audio and Bluetooth function is similar, the only difference is the transmission of high-quality speed, range, and power consumption, mainly relying on the new LC3 coding technology, compared to the traditional Bluetooth SBC coding transmission range is wider, faster transmission speed, the traditional SBC need 354kbps compared to the new generation of LC3 coding only 160kbps, can make the audio in the narrower bandwidth of low-power Bluetooth power transmission, can be more energy efficient and maintain high-quality audio.

LE Audio’s six highlights features

When Apple AirPods or Bluetooth headset products can support LE Audio Bluetooth low-power technology, it will bring six major functional advantages.

LC3 encoding improves audio quality

According to the Bluetooth SIG, LE Audio Bluetooth Low Power technology reduces latency issues by 70% with LC3 encoding, improves audio quality compared to traditional SBC encoders, and reduces bit rates by 50%.

AirPod or Bluetooth headset can improve status with LE Audio transmission efficiency, improve latency and sound quality issues with LC3 audio encoder, and improve AirPods battery life.

Multi-streaming audio

Multiple streaming audio refers to the ability to connect one Bluetooth headset to multiple devices at the same time, also known as Bluetooth multipoint connectivity, and is expected to allow multiple AirPods Bluetooth earbuds to connect to iPhone, iPad, Mac and other devices to play music at the same time in the future.

While Apple currently enables iPhone and iPad devices to connect to multiple AirPods at the same time to share audio, allowing friends to listen to music or watch movies together, the feature does not yet allow multiple AirPods devices to be connected at the same time.

Separate left and right ear channels

LE Audio Multistream

LE Audio also supports left and right ear channel separation, for example, when you are in a video conference on your Mac computer and there is an incoming call from your iPhone, you can talk without stopping the conference so that you can keep listening to the conference sound in the left ear of the AirPods Bluetooth headset and make a call in the right ear.

No need to switch between iPhone and Mac

LE Audio technology also allows AirPods to switch between devices quickly when connected to both iPhone and Mac devices.

Auracast Broadcast Audio

LE Audio broadcast audio feature is mainly through the broadcast method, able to deliver audio to nearby users, like when you go to an exhibition, the narrator can wear a device that sends broadcast audio, and nearby members can directly receive the narrator’s voice as long as they wear AirPods or LED Audio-enabled Bluetooth earbuds.

What are the earbuds that support LE audio Bluetooth?

According to the latest documents from the Bluetooth Alliance database, Apple recently began testing a new Bluetooth 5.3-enabled device, although the documents do not reveal the details of the device, it can be seen that Apple is preparing to support LE Audio technology for the new Bluetooth headset.

There are many signs that Apple is ready to support LE Audio technology, a few months ago, Apple released AirPods Max for developers to support LC3 encoding format, on the other hand, Bloomberg news said AirPods Pro 2 generation internal code B698, using the new generation of H1 chip, Apple AirPods Pro 2 generation is expected to support Bluetooth 5.3 and Bluetooth 5.3. The generation will support Bluetooth 5.3 and LC3 technology, and it is known that the new generation of AirPods Pro is ready to debut at the Apple event in September.

Currently able to support LC3 technology Bluetooth earbuds, including Xiaomi headset Redmi Buds Pro, VOCA true wireless headset, and other products, the Bluetooth technology alliance claims LE Audio can bring unlimited possibilities for the Bluetooth audio market, can change the life audio experience, but also can pull in family and friends distance, is expected to become the basic Bluetooth device function by 2024.

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