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LE audio protocol principle and application scenarios
1. Principle of LE Audio
In January 2020, the Bluetooth SIG released a new generation of Bluetooth audio technology standard - LE Audio (Low Power Audio). Its birth brought four key new features: Low Complexity Communication Codec (LC3) , multiple streaming audio, hearing aid function expansion and broadcast audio function, Bluetooth 5.2 began to support LE Audio audio technology, which uses the LC3 codec algorithm, compared with the SBC codec of Classic Audio (Classic Bluetooth), LC3 provides more High sound quality, the reason why LC3 has high sound quality and low power consumption is the advanced nature of its compression algorithm. Compared with the SBC codec, LC3 can provide excellent sound quality at a bit rate of 240~345Kbps, and can compress the bit rate to 160~192Kbps while maintaining sound quality performance. Audio data is transmitted by multiple streaming audio, supporting one-to-many connection of central equipment.