On 07/05/2012 04:41 PM, Hans de Goede wrote:
Hi,
On 07/05/2012 03:35 PM, Antti Palosaari wrote:
<snip>
I believe you're doing something wrong ...
I compiled radio from http://git.linuxtv.org/xawtv3.git to tune and
> "arecord -r96000 -c2 -f S16_LE | aplay - " to play sound. Just
silent white noise is heard.
You're not specifying which device arecord should record from so likely
it is taking
the default input of your soundcard (line/mic in), rather then recording
from the
radio device.
I tried to define hw:1,0 etc. but only hw:0,0 exists.
Note the latest radio from http://git.linuxtv.org/xawtv3.git will do the
digital loopback of
the sound itself, so try things again with running arecord / aplay, if
you then start radio
and exit again (so that you can see its startup messages) you should see
something like this:
"Using alsa loopback: cap: hw:1,0 (/dev/radio0), out: default"
Note radio will automatically select the correct alsa device to record
from for the radio-usb-stick.
For some reason I don't see that happening.
Hmm, so it seems that for some reason alsa is not working with the usb
"sound-card" part of the usb-stick. Can you try doing:
ls /dev/snd/
Before and after plugging in the device, you should get a new
PCMC?D0c device there.
Two files appears, controlC2 and pcmC2D0c.
Otherwise see if you can enable some debugging options for snd-usb-audio
and find out why it is not liking your device (and maybe at a quirk for
it somewhere) ? If you do end up adding a quirk please let me know
and I'll test with mine to ensure the quirck does not break working
versions :)
And now I can hear the voice too using "arecord -D hw:2,0 -r96000 -c2 -f
S16_LE | aplay -".
But loopback is still missing.
regards
Antti
--
http://palosaari.fi/
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