I spent a lot of time tuning Roon on Synology and finally got ROCK running on NUC. The Roon Core is working smoothly. Now I’m trying hard to solve DSD popping noise on RPi. And that’s very confusing.
Here’s my setup:
An Intel NUC 10, i3 processor, running ROCK, wired connection.
RPi 3 and RPi 4 4GB RAM, with different OS installed on different SD card to test. Roon Bridge installed.
Sennheiser HDV 820 USB DAC connected to Pis using a USB cable.
On Pi 3 and Pi 4, wired or wireless, Moode Audio with bridge installed, I can hear popping while playing DSD128 via DoP. So Moode doesn’t work for me.
On Pi 3, DietPi+Allo GUI produces no popping, wired.
On Pi 4, DietPi+Allo GUI produces popping, wired, which is really weird. Maybe this version of DiePi wasn’t optimised for RPi 4? Already updated to latest DietPi.
All the popping sounds are not random, I can hear them when playing certain parts of the DSD files. But if I resample the files to PCM, the popping goes away.
I installed Ropieee XL on another SD card. The installation took a few hours, so I haven’t tested it yet.
I also tested PiCorePlayer, but Roon only permits me to play up to PCM 192kHz or DSD64. No popping. Will PiCore RT kernel support high rates?
Anyone has idea what is the best OS as bridge on Pi 4? I heard that Pi 4 has better USB bandwidth, but only to find that Pi 3 works better for me.