Bluetooth LC3

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Bluetooth LC3

2020-01-13 17:32:42

Do you know any interesting info about Fraunhofer's LC3 codec?

https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/le-audio/
https://www.iis.fraunhofer.de/en/ff/amm/communication/lc3.html

The Bluetooth SIG could have used Opus to address most of the needs, no?

Re: Bluetooth LC3

Reply #1 – 2020-01-13 21:28:28

For 160-350k a lower complexity codec probably made sense.

Re: Bluetooth LC3

Reply #2 – 2020-01-13 23:45:17

I think the same that Garf about it, basically they want to sell a license for it.

Quote from: Garf on 2020-01-08 11:29:13

Quote from: LithosZA on 2020-01-08 05:35:00
I wonder why they didn't just use Opus instead of creating a new codec?

If you look at the specification, it's basically Opus with a few marginal gadgets thrown in. I'm going to make a not-very-wild guess that you'll need a license for the gadgets, from the people who wrote the standard.

Re: Bluetooth LC3

Reply #3 – 2020-01-16 07:34:19

Quote from: jido on 2020-01-13 17:32:42

The Bluetooth SIG could have used Opus to address most of the needs, no?

Not the need to make money by licensing proprietary tech to device manufacturers.

Re: Bluetooth LC3

Reply #4 – 2020-04-19 21:05:54

Will this codec at least introduce good quality bidirectional audio into the official Bluetooth LE stack? (eg. gaming headsets with simultaneous input/output audio paths)
There's a hackish solution called FastStream for classic Bluetooth, but the bitrate budget is very low for the used SBC codec (212kbps down / 72kbps up), so it's probably acceptable for game audio but nothing else.