Audio Application: Cannot change codec capability in 2.6.0

[Ladivin]

Hi all,

I've just installed the latest release of the SDK (2.6.0) and if I change codec capability (i.e. set CONFIG_BT_BAP_BROADCAST_24_2_1=y) of the audio application, the audio coming from my receiver is completely broken. 

I use completely clean audio application as it comes with the SDK, the only changes are these two lines added to the prj.conf:

CONFIG_BT_BAP_BROADCAST_24_2_1=y

CONFIG_TRANSPORT_BIS=y

I'm working in broadcast mode and I have one gateway and one receiver. I tried feeding the gateway from both the USB and from the line in with the same result. 

Previously I worked with 2.4.X version of the SDK and back then, using Kconfig such as CONFIG_BT_BAP_BROADCAST_24_2_1=y was enough to change the codec capability (i.e. audio quality). Is the behavior I'm observing with 2.6. a bug, or do I need to use a different Kconfig(s) now? 

Thank you very much!

Best,

Lada 

[ovrebekk]

Hi Lada

Could you try to add the following configuration to your project? 

CONFIG_BT_AUDIO_PREF_SAMPLE_RATE_24KHZ=y

Then you should be able to use the CONFIG_BT_BAP_BROADCAST_24_2_1 setting. 

Best regards
Torbjørn 

[Ladivin]

Hi Torbjørn,

that did the trick! Many thanks! 

Just a thought - would it make any sense to introduce a dependency between these two Kconfigs? Or to mention this in the documentation (if it's already there and I'm blind, please accept my apology  )?

Regards,

Lada 

[ovrebekk]

Hi Lada

Good to hear you got it working!

I have forwarded your feedback to the developers, I agree at a minimum this should be documented somewhere ...

Best regards
Torbjørn