Is CONFIG_AUDIO_FRAME_DURATION_7_5_MS supported?

[gocchan]

Hi, 

I am evaluating the nRF5340 Audio DK by applying the sample code nRF5340_audio.

I tried changing the frame to 7.5 ms by editing prj.conf as below and no audio came out of the headset.

# nRF5340 Audio
CONFIG_NRF5340_AUDIO=y
CONFIG_AUDIO_DEV=2
CONFIG_TRANSPORT_BIS=y
CONFIG_TRANSPORT_CIS=n
CONFIG_AUDIO_SOURCE_USB=n
CONFIG_AUDIO_SOURCE_I2S=y
CONFIG_AUDIO_FRAME_DURATION_7_5_MS=y
CONFIG_AUDIO_FRAME_DURATION_10_MS=n

*For the headset, set CONFIG_AUDIO_DEV=1.

Also, when I changed the gateway's audio source to USB (CONFIG_AUDIO_SOURCE_USB=y, CONFIG_AUDIO_SOURCE_I2S=n), the center LED turned red as soon as the audio was input.

It works fine if the frame is 10 ms.

Is 7.5 ms frame not supported?

I used 2 PCA10121 boards (Gateway/Headset), NCS v2.1.2, sample code "nRF5340_audio".

Regards, 

Gotoda

[Karl Ylvisaker]

Hello Gotoda,

No, 7.5 ms frames are not currently supported by the nRF5340 Audio reference application.
If you have questions about the roadmap for the nRF5340 Audio reference application or to future releases of the application please direct these to your Regional Sales Manager instead, since we do not discuss these topics here in DevZone. If you do not know who your RSM is, please send me a message with your location so that I may provide you with their contact information.

Best regards,
Karl 

[gocchan]

Thank you.