<html><head><meta http-equiv=Content-Type content="text/html; charset=UTF-8"><META name="Author" content="GroupWise WebAccess"><style type="text/css">
body p
{
margin: 0px;
}
</style></head><body style='font-family: Helvetica, Arial, sans-serif; font-size: 13px; '><div>Hello everyone,</div><div><br></div><div>I'm new to this list and also new to Linux.</div><div>I am a PhD student working on a research project with hearing impaired people.<br></div><div>For
our research studies we want to realize different audiological tests
with a virtual acoustic sound system. The program we use for rendering
the virtual acoustics runs in Linux. <br>In our lab, we have a Fireface
802 sound card from RME. But RME doesn't offer support in Linux and
unfortunately doesn't provide drivers. <br></div><div><br></div><div>I
run the Fireface in ClassCompliant mode and it is connected via USB to
the computer with Ubuntu Studio 20.04 LTS as operating system. Basically
the Fireface works, I can use 8 output channels for my sound playback
via Jack.<br>But the problem is that I actually want to get playback
from 12 loudspeakers in our loudspeaker circuit. When I start Jack, it
displays 22 output channels, but as I said, only 8 playback channels are
playing sound.</div><div><br></div><div>Could this be caused by the snd_usb_audio driver? Or how can I assign the output channels directly?<br><br>About any suggestion for a solution I would be very happy!!!<br></div><div><br></div><div>Best regards,</div><div><br></div>Sebastian Roth</body></html>