How do I use my USB microphone and motherboard audio out?
Rudy
crapsh at monkeybrains.net
Fri Dec 14 14:01:48 PST 2007
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
:(
Rudy
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