LC3 (codec)
| Type of format | Audio |
|---|---|
| Extended to | LC3plus |
| Standard | Bluetooth 5.2 LE |
| Type of format | Audio |
|---|---|
| Standard | ETSI TS 103 634 |
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 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] The conclusion regarding Opus is disputed as the test only included speech audio, but the comparison was made to version 1.1.4 of the reference Opus encoder, using complexity level 0 at 32kbps and relying on CELT (general audio) instead of SILK (speech); the test also did not take into account the newer version 1.2 of the Opus encoder released in 2017, where significant improvements were made to low bitrate streams.[5]
See also
References
- ^ "LE Audio". Bluetooth Technology Website. Retrieved 2020-01-08.
- ^ "LC3 / LC3plus". Fraunhofer IIS. Retrieved 2020-01-10.
- ^ Frumusanu, Andrei. "CES 2020: Bluetooth SIG Announces LE Audio Standard: New Baseline For Next Decade". www.anandtech.com. Retrieved 2020-01-08.
- ^ "New Bluetooth codec improves sound quality, benefits the hearing impaired". Android Authority. 2020-01-07. Retrieved 2020-01-08.
- ^ a b "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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