LC3 (codec)

LC3 (Low Complexity Communication Codec) is an audio codec specified by the Bluetooth Special Interest Group (SIG) for the LE Audio audio protocol introduced in Bluetooth 5.2.[1] It's developed by Fraunhofer IIS and Ericsson as the successor of the SBC codec.[2]

LC3
Type of formatAudio
Extended toLC3plus
StandardBluetooth 5.2 LE

It provides higher audio quality and better PLC than SBC, G.722 and Opus according to subjective testing by the Bluetooth Special Interest Group and ETSI.[3][4] [5] Notably, the test only included speech audio, but the comparison was made to Opus 1.1.4 complex level 0 at 32kbps using Opus CELT (general audio) not SILK (speech). On top of comparing speech to general audio codec, it also did not use the newer Opus 1.2 released in 2017 where significant improvements were made to low bitrate streams.

See also

References
  1. "LE Audio". Bluetooth Technology Website. Retrieved 2020-01-08.
  2. "LC3 / LC3plus". Fraunhofer IIS. Retrieved 2020-01-10.
  3. Frumusanu, Andrei. "CES 2020: Bluetooth SIG Announces LE Audio Standard: New Baseline For Next Decade". www.anandtech.com. Retrieved 2020-01-08.
  4. "New Bluetooth codec improves sound quality, benefits the hearing impaired". Android Authority. 2020-01-07. Retrieved 2020-01-08.
  5. "Digital Enhanced Cordless Telecommunications (DECT); Study of Super Wideband Codec in DECT for narrowband, wideband and super-wideband audio communication including options of low delay audio connections (≤ 10 ms framing)" (PDF). ETSI. September 2018.
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