USB audio pops on USB hub

Maurizio Messa · 4 Feb 2020, 14:27

Hi to all,
I have a strange issue connecting an usb audio device on my Omega2+. If I connect the usb audio directly to usb port of the Onion it works fine. But I need a webcam too, so I connect the webcam and the usb audio card via a usb hub. The webcam works fine and the also the usb audio works (if I reproduce music, talk or white noise), but if I play a continuous tone (for example 500 Hz), the audio pops!
If I connect the audio device directly to the usb port (without the hub), it works fine also for the tone.
It doesn't matter the codec sample rate (I tried 8 khz, 16 khz and 32 khz) or if the webcam is present or not.

Thanks
Maurizio Messa