BLE BIS channels > 2

RE: BLE BIS channels > 2

Sudhanand — Tue, 07 Mar 2023 14:59:51 GMT

Thank you for the clarification Jonathan. I will reach out if I have further questions.

RE: BLE BIS channels > 2

JONATHAN LL — Tue, 07 Mar 2023 09:14:45 GMT

Minor update:

BIS > 2 it might work but we cannot guarantee the stability. BIS = 2 or less is something we have tested and can guarantee will work.

Also, encoding a 48kSpS 96kbps 16 bits audio stream needs ~33 % CPU usage, 3 BIS could consumes too many CPU resource.
Low down the bitrate might do some help, but that is something we don't recommend this. So its up to you to do some trail and error to see what is expectable for your application.

But do feel free to ask about anything and we will try to help as best we can, so if you get stuck somewhere then pleas continue with the inquiries

Regards,
Jonathan

RE: BLE BIS channels > 2

JONATHAN LL — Mon, 06 Mar 2023 15:12:58 GMT

Hi,

Features that is not listed here in our feature matrix is not guaranteed to work, so we only support two BIS. That does not necessarily mean that it will not work.

So it is possible to increase the BIS to more then two but its at your own "risk" type of situation. 3 or 4 seems to be doable but I have not tested this.

Adding links here including the one you referenced as relevant to topic:

https://devzone.nordicsemi.com/f/nordic-q-a/94823/nrf5340-audio---6-streams-broadcasting/401008

https://devzone.nordicsemi.com/f/nordic-q-a/96061/nrf5340-audio-dk-multiple-bis-streams-from-a-single-dk

https://devzone.nordicsemi.com/f/nordic-q-a/94690/is-there-any-resource-which-includes-two-or-more-musics-in-a-stream-for-bis-demo/399853

https://devzone.nordicsemi.com/f/nordic-q-a/96061/nrf5340-audio-dk-multiple-bis-streams-from-a-single-dk

Looking a bit more in to this and will update with anything I can find that helps.

Regards,
Jonathan