Porting OPUS encode issues

[Jon-Yang]

How to integrate Opus coding on NRF52840DK, is there any example reference for integration or documentation for porting? Hope you guys can help me, thanks!

[Jon-Yang]

Hi,

I want to use NRF52840DK to encode PCM data and send this data to other devices. the PCM data is received by Dmic，

so I need OPUS encoder to do this.

[dejans]

Hi,

There are some modifications which are done to the OPUS library for reducing the RAM and CPU usage. Normally, OPUS works in hybrid mode where it uses either CELT or SILK codecs based on the spectral components of the audio and runtime OPUS configuration options. nRF Smart Remote effectively disables Hybrid mode and requires you to choose SILK or CELT at compile time.
You would have to diff the OPUS library code included in the Smart Remote with the official release to see what was done additionally.

Best regards,
Dejan

[Jon-Yang]

Hi ，dejans

Thanks a lot for this informations  , this is very useful 

Can you please provide the code for nRF Smart Remote?

[dejans]

Hi,

You can find zip archive on our Products page.

Best regards,
Dejan

[Jon-Yang]

HI ，Dejan

Thanks a lot for this information!

But I don't find any OPUS reference on the nRF6939-FW and nRF6939-SW  .

Can you help confirm if I've downloaded the wrong software?

[Kenneth]

Hello,

Dejan is out of office, searching through the \libnvs package in the zip file I could at least find a lot of references to opus. I assume this is what we have. Be aware this is more than 8 years old, and not longer maintained or supported.

Kenneth