1 Mar
2006
1 Mar
'06
4:33 p.m.
Lee Revell <rlrevell(a)joe-job.com> writes:
On Wed, 2006-03-01 at 19:57 +0000, Chris Cannam
wrote:
It is actually more like a hoax. To wit: I have a builtin sound card
into my laptop without any spdif/iec958 folderol. Now I plug in an
IEC958 adapter into USB (which counts as a soundcard of its own).
What happens now if I do
aplay -D spdif something.wav
? Most certainly not the soundcard with the S/PDIF output gets used.
Instead some nonsense happens.
I have found no way whatsoever to get this card to output anything
except by using Ubuntu's Sound preference setting to make the
ridiculous S/PDIF only sound gadget the default sound device.
Only then will I ever get aplay (which in contrast to alsamixer does
not have something like a -c 1 option to specify card 1) to use the
SPDIF gadget. But I don't want to use the gadget for all of my
output.
And I have been unable to find any man page or info or web page
accessible by Google that would tell me how to do this.
It is rather silly.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
On Wednesday 01 Mar 2006 19:03, Lee Revell
wrote:
aplay -L
...
cards 'cards.pcm'
front 'cards.pcm.front'
rear 'cards.pcm.rear'
center_lfe 'cards.pcm.center_lfe'
side 'cards.pcm.side'
surround40 'cards.pcm.surround40'
surround41 'cards.pcm.surround41'
surround50 'cards.pcm.surround50'
surround51 'cards.pcm.surround51'
surround71 'cards.pcm.surround71'
iec958 'cards.pcm.iec958'
spdif 'cards.pcm.iec958'
modem 'cards.pcm.modem'
phoneline 'cards.pcm.phoneline'
default 'cards.pcm.default'
dmix 'cards.pcm.dmix'
dsnoop 'cards.pcm.dsnoop' Actually I think Julian has a point - I can't
find the doc anywhere
that says you output to the front speakers by opening the "front"
device and rear the "rear" device, that apps should open the
"default" PCM by default, that "hw:x" should only be used for
special
cases where direct hardware access is requires (like JACK), etc.
Only half a dozen people in the world know these things. And here you
are leaking them onto a public mailing list!