How do I use my USB microphone and motherboard audio out?
CQG00620 at nifty.ne.jp
Sat Dec 15 06:11:16 PST 2007
At Fri, 14 Dec 2007 14:02:42 -0800,
> Watanabe Kazuhiro wrote:
> > At Thu, 13 Dec 2007 12:16:45 -0800,
> > Rudy wrote:
> >> Watanabe Kazuhiro wrote:
> >>> Hi.
> >>> At Tue, 11 Dec 2007 22:16:58 -0800,
> >>> Rudy wrote:
> >>>>> After reading some more man pages, I am still stumped but can better
> >>>>> phrase my question:
> >>>>> how do I set dsp0.0 as the default OUPUT and dsp1.1 as the default INPUT?
> >> ...
> >>> Audacity will be able to specify a different dsp device for the
> >>> recording and playback device via the "Audacity Preferences" panel
> >>> ("Edit" -> "Preferences" -> "Audio I/O"); e.g. /dev/dsp0 for playback,
> >>> and /dev/dsp1 for recording.
> >>> Have you tried such configulation?
> >>> ---
> >>> Watanabe Kazuhiro (CQG00620 at nifty.ne.jp)
> >> No luck. I only see '/dev/dsp'. It seems that dsp likes to automatically do stuff, but is not
> >> smart enough to always do the right thing.
> > OK. My understanding is:
> > * There is /dev/dsp0 which corresponds to pcm0 (snd_hda).
> > * /dev/dsp and /dev/dsp0 are the same. e.g.:
> > $ ls -l /dev/dsp /dev/dsp0
> > crw-rw-rw- 1 root wheel 0, 83 Dec 14 20:55 /dev/dsp
> > crw-rw-rw- 1 root wheel 0, 83 Dec 14 20:55 /dev/dsp0
> > $
> > * There is no /dev/dsp1. But there is /dev/dsp1.1 which corresponds
> > to pcm1 (snd_uaudio).
> > If these are correct, will you try to make a symlink /dev/dsp1 which
> > points to /dev/dsp1.1 via devfs.conf(5)? i.e. Add the following line
> > to /etc/devfs.conf and then reboot the system:
> > link dsp1.1 dsp1
> I entered these lines:
> # attempt to override the dsp0 input with the dsp1 input... doesn't work
> link dsp1.1 dsp0.1
> # this didn't do anything
> link dsp1.1 dsp1
> # this works... wanted to make sure I could do something. :)
> link dsp1.1 microphone
> and ran
> /etc/rc.d/devfs restart
> # ll /dev/ | grep dsp
> crw-rw-rw- 1 root wheel 0, 121 Dec 14 13:55 /dev/dsp0.0
> crw-rw-rw- 1 root wheel 0, 122 Dec 14 09:33 /dev/dsp0.1
> crw-rw-rw- 1 root wheel 0, 126 Dec 14 09:33 /dev/dsp0.2
> crw-rw-rw- 1 root wheel 0, 145 Dec 14 09:31 /dev/dsp1.0
> crw-rw-rw- 1 root wheel 0, 144 Dec 14 09:31 /dev/dsp1.1
> lrwxr-xr-x 1 root wheel 6 Dec 14 13:52 /dev/microphone -> dsp1.1
> # cat /dev/sndstat
> FreeBSD Audio Driver (newpcm: 32bit 2007061600/i386)
> Installed devices:
> pcm0: <NVidia MCP51 High Definition Audio Controller> at memory 0xfe024000 irq 21 kld snd_hda
> [20071129_0050] [MPSAFE] (1p:2v/1r:1v channels duplex default)
> pcm1: <USB Audio> at ? kld snd_uaudio [GIANT] (0p:0v/1r:1v channels)
> mode 1:(input) 1ch, 16/16bit, pcm, 8000,11025,22050,44100,48000Hz
> ######### pcm0 is the motherboard sound/mic/lineout/etc
> ######### pcm1 is the usb mircophone
> # cd /dev
> # ln -s dsp1.1 dsp0.111
> # ln -s dsp1.1 dsp0.1
> # ll dsp*
> crw-rw-rw- 1 root wheel 0, 121 Dec 14 14:01 dsp0.0
> lrwxr-xr-x 1 root wheel 6 Dec 14 14:01 dsp0.111 -> dsp1.1
> crw-rw-rw- 1 root wheel 0, 126 Dec 14 09:33 dsp0.2
> crw-rw-rw- 1 root wheel 0, 149 Dec 14 09:31 dsp1.0
> crw-rw-rw- 1 root wheel 0, 144 Dec 14 09:31 dsp1.1
> I can't seem to force the dsp1.1 to be the dsp0.1
Hmm... I don't know what to do any more. Sorry.
As a last proposal, how about audacity-devel
AFAIK, there is a limitation for the stable version of Audacity
(ports/audio/audacity) to use USB microphones. See the URLs below.
USB-microphone in Open Sound System
[Portaudio] Prompting for all output and input devices separately
I don't know whether the limitation is applied to FreeBSD or not.
Watanabe Kazuhiro (CQG00620 at nifty.ne.jp)
More information about the freebsd-questions