LC3 (codec)


LC3 is an audio codec specified by the Bluetooth Special Interest Group for the LE Audio audio protocol introduced in Bluetooth 5.2. It's developed by Fraunhofer IIS and Ericsson as the successor of the SBC codec.
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. 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 not SILK. 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.