I’m trying to record audio from 3 USB microphones, using ALSA.
When I connect 1 USB mic directly to the BBB, everything works fine. It gets recognized and it records without any issue.
However, when I connect the 3 USB mics to a USB hub (that connects to the BBB), the microphones aren’t detected by ALSA. The microphones are connected and powered, they are listed by ‘lsusb’, but ALSA does not recognize them as sound cards and so, the mics can’t be used to record sound.
I’ve tried changing ALSA related files (config files), but the mics remain undetected. If I connect just 1 mic directly to the BBB, it works without any issue.
Has anyone here with more experinece with ALSA knows what’s going on and has any suggestion to solve this?