NRF5340 AUDIO DK: Multiple BIS streams from a single DK

RE: NRF5340 AUDIO DK: Multiple BIS streams from a single DK

Maria Gilje — Thu, 02 Feb 2023 13:30:59 GMT

Hello,

I can see that you made a new ticket to ask about this question.

My colleague will help you there, and I will close this ticket.

Best Regards,
Maria

RE: NRF5340 AUDIO DK: Multiple BIS streams from a single DK

uzer123 — Mon, 30 Jan 2023 15:12:01 GMT

I see. But how i will set the two streams to the gateway? In PC i can send one stream only with USB.

How i can choose the second stream from the PC to go to the same gateway device as second stream?

RE: NRF5340 AUDIO DK: Multiple BIS streams from a single DK

Maria Gilje — Mon, 30 Jan 2023 14:15:09 GMT

Hello,

The gateway streams two BIS by default and it is up to the headset to choose which BIS to sync to. An implementation of how to switch streams can be found in nrf5340_audio/src/bluetooth/le_audio_bis_headset in the function le_audio_user_defined_button_press(). The source code can also be found on github.

Best Regards,
Maria

RE: NRF5340 AUDIO DK: Multiple BIS streams from a single DK

uzer123 — Fri, 27 Jan 2023 14:33:48 GMT

Thanks for the answer.

"Correct. For the current state of our LE Audio solution, one BIG with two BIS is the maximum amount of streams from one gateway."

So, currently i can not have more than 2 streams, but multiple streams are indeed supported by BLE audio and maybe this you can implement such solution in nrf5340 audio dk in the future?Also, how i can implement this? (one audio DK as gateway, sending two BIS streams?)

RE: NRF5340 AUDIO DK: Multiple BIS streams from a single DK

Maria Gilje — Fri, 27 Jan 2023 13:44:24 GMT

Hello,

[quote user=""]Can i transmit multiple streams from a single NRF5340 Audio DK in BIS mode.[/quote]

Yes, as you can see in the image you shared, you can have two BIS in one BIG from a gateway. The image also shows that one BIG with two BIS is the maximum for a broadcast source (gateway).

[quote user=""](in my understanding, there is no limit of headsets in BIS mode)[/quote]

You understand correctly. There is no limit on how many headsets can sync to the same BIS source.

[quote user=""]I understand that till now I can use only two streams from a single gateway (Broadcast Isochronous Group (BIG))?[/quote]

Correct. For the current state of our LE Audio solution, one BIG with two BIS is the maximum amount of streams from one gateway.

Kind Regards,
Maria