Apple will hold an autumn new product launch event on September 7, 2022. In addition to the much-anticipated new iPhone 14 series, it is also expected to launch AirPodsPro 2 wireless headphones with major revisions and upgrades. Although Apple Music already supports lossless sound quality streaming, the existing AirPods Pro/Max cannot fully support high-resolution sound quality. It is rumored that Air Pod Pro 2 will support the LE Audio function, and the iPhone 14 series has also been upgraded to Bluetooth 5.2 that can support the LE Audio function.
What is LE Audio, and what are its features and advantages? Here’s a summary:
[LE Audio low-power audio transmission] is the latest generation of Bluetooth technology specifications released by the Bluetooth Special Interest Group (SIG) in 2020. It is based on the Bluetooth V5.2 specification.
The main features of “LE Audio low-power audio transmission” are the new high-quality, low-power audio decoder LC3, which makes the device more power-saving/more stable in connection, supports multi-stream audio (Multi-Stream Audio), supports broadcast audio (Auracast Broadcast Audio) technology, and provides strong support for hearing aids.
Not only APPLE AirPods Pro 2 Bluetooth wireless headphones are expected to support Bluetooth LE Audio function, Google also recently announced that Android 13 will also support LE Audio encoding.Here are the four main features of LE Audio:
1. Power-saving, low-latency, high-quality LC3
LE Audio has LE Power Control (low-power Bluetooth power control) function, which can actively and dynamically adjust the low-power Bluetooth transmission power, making the device more power-saving and providing low-latency connection, and there will be no out-of-sync between image and sound.
In addition to saving power through wireless communication, LE Audio also introduces a more power-saving Low Complexity Communications Codec (LC3), which can maintain sound quality while reducing the computing requirements for audio processing by source devices, Bluetooth headsets, and speakers. Compared with SBC, LC3 has better compression rate and audio restoration, which can create a power-saving product with higher battery life without sacrificing sound quality. At the same bandwidth and encoding rate, it can provide a better music experience and voice quality. True wireless headphones that support LC3 may become smaller in size and have higher battery life, or they may remain the same size but have better sound quality.
2.Multiple streaming audio:
LE Audio supports the Multi-Stream Audio function, which can simultaneously transmit multiple sets of independent audio between a single source device and multiple sets of Bluetooth headsets and speakers. Multiple streaming audio can improve the stereo listening experience of true wireless Bluetooth headsets, provide a smoother voice input and voice control experience, and make switching between multiple audio devices more convenient.
3.Broadcast news
LE Audio supports the “Auracast broadcast audio” function. One of the functions of Auracast is to share audio content Share Our Audio. Through broadcasting, the sender can send signals to all receivers within the range, allowing users to easily share music with friends or in meetings, the host can broadcast the voice to the headphones of a large number of participants.
4. Assist the hearing-impaired
“Auracast broadcast audio” can unmute the silent world. This function is aimed at sound sharing in public places, such as in public places such as stations, airports, medical institutions, museums, gyms, restaurants or waiting rooms. Auracast can be used to transmit music to visitors’ Auracast devices, which can broadcast the audio content of silent TV. With Auracast, visitors can listen to public broadcasts on various occasions, such as bus departure times, flight arrivals, gate changes and travel information, and even as a museum navigation application. It can also be used as a new generation of assistive hearing system technology, which is a great boon for the hearing-impaired.
Source: KOCPC Chinese