Hi,

I've never used the specific USB device you mentioned, however a while
back I did use a cheap $5 USB audio interface / dongle (which used a
C-Media chipset) with Rivendell as a Cue output.

It did work for me, however there were a few things that I found I had
to do.  First, I was using straight ALSA, no Jack involved.  Second, I
had to hard-code the device numbers for both the onboard sound and the
USB device in /etc/modprobe.d/alsa-base (Ubuntu-based system).  Third
(and this is probably most important) I had to make sure that if the USB
dongle ever got unplugged, it was plugged back into the *same* USB port
(plugging it into a different USB port would usually give it a different
device number, even though it was hard-coded - I actually put a sticker
/ note above the USB port to mark the one to use).  And fourth, I had to
boot the system with the USB audio dongle plugged into the proper USB
port and be sure to avoid unplugging the USB device while the system was
running.

I also had to hard-code my Rivendell sample rate in /etc/asound.conf or
else caed wouldn't initialize the audio interfaces at the proper sample
rates.

When I did this worked for me.

I will say that I did not use this setup long term - it was set up as a
test / demo laptop to show off and test some of the capabilities of
Rivendell (and to show how it could run on a 10 year old system without
difficulty).  For on-air use a better audio card would be the way to go.
 For this test machine I used the "internal/onboard" sound for the
"main" output, and the usb audio dongle for Cue.  The audio quality
wasn't as good as it would have been with a better sound card, but
considering that I didn't have high quality speakers hooked up to it at
the time, you couldn't tell.

I'll also note that in my setup each audio interface only had 1 output
that I could use.  I have no idea how you'd set up the multiple outputs
on the card you referenced, however if the card is recognized by alsa
and you're able to get Rivendell to output audio to it, then I imagine
it should be possible to get all the audio outputs working.


 


> As much as I want to run RD with a high-quality audio interface, I have an 
> immediate need for a quickie 
> system that will unfortunately need to be run with a crap-tastic multichannel 
> audio box from the local 
> computer store. 
>
> I'm being steered towards a Sabrent USB-SND8 
> (http://www.sabrent.com/category/audio/USB-SND8/) -- eight 
> channel Surround-style output (to be used as separate Main log, RDPanel and 
> Cue lines), 44.1 and 48k sample 
> rates, and two mic inputs, all driven by a C-Media chipset, which I don't see 
> mentioned in the Tryphon wiki. 

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