how to config the open-source lc3 codec for nrf5340

RE: how to config the open-source lc3 codec for nrf5340

Karl Ylvisaker — Fri, 03 Nov 2023 10:01:03 GMT

Hello,

I leave this message here for people that might stumble upon this post in the future:

I am happy to report that you no longer need to be given explicit access to download the LC3 codec, it has been made public and can be found here:
https://github.com/nrfconnect/sdk-nrfxlib/tree/main/lc3

Best regards,
Karl

RE: how to config the open-source lc3 codec for nrf5340

dejans — Mon, 13 Jun 2022 06:27:42 GMT

Hi,

I am glad that everything is OK.

Best regards,
Dejan

RE: how to config the open-source lc3 codec for nrf5340

Zhongsan — Sat, 11 Jun 2022 03:24:24 GMT

thanks

RE: how to config the open-source lc3 codec for nrf5340

dejans — Fri, 10 Jun 2022 13:04:12 GMT

Hi,

When you get the license for LC3 codec, you will see lc3 folder (with some content) in addition to liblc3codec in the same lib directory.

Best regards,
Dejan

RE: how to config the open-source lc3 codec for nrf5340

Zhongsan — Fri, 10 Jun 2022 12:25:49 GMT

Hi，

The open-source lc3 codec i metioned is where it's position is /ncs/modules/lib/liblc3codec; this is not open-source lc3 codec? i am confused

thanks

RE: how to config the open-source lc3 codec for nrf5340

dejans — Fri, 10 Jun 2022 11:59:00 GMT

Hi,

LC3 codec is not open source, It requires that you obtain license to access the repository.
In other words, you can use either SBC software codec, or LC3 codec which requires license.

Best regards,
Dejan

RE: how to config the open-source lc3 codec for nrf5340

Zhongsan — Fri, 10 Jun 2022 11:48:07 GMT

Do you mean that the open source lc3 codec cannot be used for this project

thanks

RE: how to config the open-source lc3 codec for nrf5340

dejans — Fri, 10 Jun 2022 09:39:01 GMT

Hi,

You can use SBC codec instead of LC3. There are several changes that you need to make in prj.conf and overlay files.
You need to remove following two lines from the overlay files overlay-headset.conf and overlay-gateway.conf.
CONFIG_LC3_ENC_CHAN_MAX=2
CONFIG_LC3_DEC_CHAN_MAX=1
and add line CONFIG_SW_CODEC_SBC=y to the prj.conf

Best regards,
Dejan

RE: how to config the open-source lc3 codec for nrf5340

Zhongsan — Fri, 10 Jun 2022 01:25:15 GMT

Yes, I know nRF5340 audio already included the config of LC3 codec, but that one need authorize, we still waiting, I want to use the open-source one

thanks

RE: how to config the open-source lc3 codec for nrf5340

dejans — Thu, 09 Jun 2022 12:10:00 GMT

Hi,

LC3 codec configuration options are already included in the overlay files overlay-headset.conf and overlay-gateway.conf (CONFIG_LC3_ENC_CHAN_MAX=2 and CONFIG_LC3_DEC_CHAN_MAX=1).
You can read more about nRF53 audio in the documentation.

Best regards,
Dejan