Raspberry Pi4 real-time upsampler

[Hasan Aydin]

Is it possible to use a Raspberry Pi4 as a real-time upsampler + dithering with SPDIF or AES In and Output?

Like this: https://weiss.ch/products/pro-audio/sfc2/

 

[somebodyelse]

You should be able to configure it to do that. https://www.audiosciencereview.com/...lladsp-set-up-instructions-for-newbies.30830/ should give you some ideas. As usual with linux there are several potential ways of doing it, depending on the details of what you're trying to achieve. Some details here for control of native alsa resampling options:
https://wiki.archlinux.org/title/Advanced_Linux_Sound_Architecture#High_quality_resampling