USB audio device testing: "Audio Advantage Micro" made by Turtle Beach

[Torfinn Ingolfsen]

On Thu, 25 Aug 2005 19:56:25 +0200
Torfinn Ingolfsen <torfinn.ingolfsen at broadpark.no> wrote:

> /var/log/messages shows:
> Aug 25 19:39:19 kg-work kernel: uaudio: This device can't play in
> rate=44100.

Ok, the sound patches (see below) fixes that problem and allows the
device to play.

Detection is almost the same:
Aug 25 23:28:24 kg-jobbpc3 kernel: uaudio0: C-Media INC. USB Audio, rev
1.10/0.10, addr 2
Aug 25 23:28:24 kg-jobbpc3 kernel: uaudio0: audio rev 1.00
Aug 25 23:28:24 kg-jobbpc3 kernel: pcm1: <USB Audio> on uaudio0
Aug 25 23:28:24 kg-jobbpc3 kernel: record channel supported format list
invalid
Aug 25 23:28:24 kg-jobbpc3 kernel: pcm1: chn_init(pcm1:record:0)
failed: err = 19
Aug 25 23:28:24 kg-jobbpc3 kernel: pcm1: pcm_chn_create(ua_chan, -1,
0xc2b86a00) failed

root at kg-jobbpc3# cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <Intel ICH4 (82801DB)> at io 0x1c00, 0x18c0 irq 11 bufsz 16384 kld
snd_ich (1p/0s/1r/4v channels duplex default)
pcm1: <USB Audio> at addr ? (1p/0s/0r/1v channels duplex)

> Hmm, wasn't there some usb audio patches (or audio patches) on this
> list a while ago? are they usable on 5.4-stable?

I found the patches at
http://staff.mybsd.org.my/skywizard/FreeBSD/sound/

and applied that to a freshly built FreeBSD 5.4-stable:
root at kg-jobbpc3# uname -a
FreeBSD kg-jobbpc3.kg4.no 5.4-STABLE FreeBSD 5.4-STABLE #3: Thu Aug 25
23:20:08 CEST 2005    
root at kg-jobbpc3.kg4.no:/storage/usr/obj/storage/usr/src/sys/T41_NOUHID 
i386

And now the device works when I select it in xmms.
However, the volume is very loud, so loud that I fear that my headphones
will break. This is even when I have turned down the volumen all I can
in xmms.
I tried using the mixer in Xfce4 (xfce4-mixer), but it just says that
mixer1 has a "Spkr" output.

What tool should I use to control output volume of this thing?
-- 
Regards,
Torfinn Ingolfsen,
Norway