USB Audio support

[rikardo1979]

(4th Nov, 2014 04:54 AM)Holger_P Wrote:  

(20th Oct, 2014 04:11 PM)rikardo1979 Wrote:  I'm not sure what previous post you referring to as you have a single post. USB audio support is in experimental stage on RPi. For further discussion and testing, read above. Thread merged

Why is it experimental?

The Project Archphile runs a Linux with very stable sound on USB DACs. No clicks and no crashes. I use two USB Dacs with PCM 2704 or PCM 2707 (nearly same chip). These are the "old" Burr Brown Chips with excellent sound and digital/optical output. Both chips makes up to 48KHz sample-rate and 16Bit.

I testet Xbian RC3 with an Raspbaerry PI B and a newer B+. On both i installed mpd and used it with alsa. And the results are the following:
With the Raspberry PI B there are very much clicks and noises. But no crashes, the B runs stable.
The Raspberry PI B+ has less clicks. But the cpu usage is after a few minutes on 100% and after about 15 to 20 minutes the B+ crashes. I am Linux Newby and dont know whats the different between Xbian and Archphile in configuration, but both play with mpd and alsa. One complete stable, the other with extreme much clicks or crashes with the newer B+. I would like to use Xbian, because i would like to use XMBC or mpd on the same Raspberry. Of course not both the same time.

ALSA m8 ALSA on RPi is not fully supported as it wasnt meant to be