Trying to Record Audio in Xavier NX without using External Device

Hello!

Per the page you referenced before, these would be some options. Please note that the FE-PI modules are no longer available and but we have added support for the re-speaker 4-mic array.

Other users have used the PCM1863 codec and the PCM1865 codec but these require kernel and device-tree customisation and so do not work out of the box.

Regards,
Jon