> Can you explain what you are trying to accomplish starting from the
> beginning?
Okay, well starting from the very beginning...
- I want 5.1 channel output from my sound card. All the time.
- This means that when I play stereo sound I want it routed to the
front two speakers as well as t
In the telecom industry there is a special term, if I remember correctly, it's
"bit shaving".
The idea is like this: suppose you're on serial (RS232) link with TWO stop bits,
but the frequencies are slightly out of sync.
The protocol is implemented in such a manner, that if the second stop
bit is
On Fri, 2005-12-30 at 12:51 +1000, Adam Nielsen wrote:
> > Wait, so you're just trying to work around a bug in the LADSPA plugin?
>
> Well, yes. *blushes*
>
> > Why not just try to get that fixed?
>
> Primarily because I've got absolutely no idea where to start looking,
> and I was hoping that t
> Wait, so you're just trying to work around a bug in the LADSPA plugin?
Well, yes. *blushes*
> Why not just try to get that fixed?
Primarily because I've got absolutely no idea where to start looking,
and I was hoping that this would be a quicker solution. Looks like
perhaps it wasn't ;-)
May
> It might be even worse. The cards most likely have independent clock
> generators. In such a case, there will be (slightly) different
> playback speed of left and right channels.
I've always wondered about this. Fair enough that two cards would play
back sound at slightly different speeds, bu
On Fri, 2005-12-30 at 12:04 +1000, Adam Nielsen wrote:
> > What are you trying to do?
>
> I'm still trying to get stereo output when passing the sound through a
> LADSPA plugin (which in the latest version of ALSA converts any incoming
> stereo source into mono.) My current idea is to create a mu
> For stereo sound reproduction through speakers it is absolutely
> crucial to have consistent and STABLE phase relationship between the
> channels.
Good point, but to be honest I'd rather have out of phase stereo
compared to the mono sound I have at the moment ;-)
> Data is written to the two ca
Aha, well now I think I might be tracking down why stereo output via
LADSPA isn't working. If I change "policy duplicate" in the LADSPA PCM
definition to "policy none" then suddenly ALSA starts paying attention
to all the 'bindings' definitions, and if I do this:
...
input {
bindings {
0 0
It might be even worse.
The cards most likely have independent clock generators.
In such a case, there will be (slightly) different playback
speed of left and right channels.
On Fri, 30 Dec 2005 04:33:13 +0200
Sergei Steshenko <[EMAIL PROTECTED]> wrote:
> "
> Then I can feed one "card" through
"
Then I can feed one "card" through LADSPA giving one
mono signal, and the other card though LADSPA giving a second mono
signal, and then I can hopefully route the two mono signals out the left
and right speakers giving me a stereo signal that has passed through
LADSPA.
"
- well, it might be not
> Well AFAICT that assert is saying that the slave of a route plugin
> can't have a non-linear format.
That's what I thought - given that the slave is the LADSPA plugin, I
assumed I'd somehow have to convert it to linear format before passing
it to LADSPA - but I can't find any docs about how to d
On Fri, 2005-12-30 at 12:04 +1000, Adam Nielsen wrote:
> > What are you trying to do?
>
> I'm still trying to get stereo output when passing the sound through a
> LADSPA plugin (which in the latest version of ALSA converts any incoming
> stereo source into mono.) My current idea is to create a mu
> What are you trying to do?
I'm still trying to get stereo output when passing the sound through a
LADSPA plugin (which in the latest version of ALSA converts any incoming
stereo source into mono.) My current idea is to create a multi-card
device, with the two "combined sound cards" being both o
On Fri, 2005-12-30 at 11:36 +1000, Adam Nielsen wrote:
> Hi all,
>
> What does this error mean?
>
> aplay: pcm_plug.c:384: snd_pcm_plug_change_channels: Assertion
> `snd_pcm_format_linear(slv->format)' failed.
> Aborted by signal Aborted...
> ALSA lib pcm_plug.c:68:(snd_pcm_plug_close) plug slav
Hi all,
What does this error mean?
aplay: pcm_plug.c:384: snd_pcm_plug_change_channels: Assertion
`snd_pcm_format_linear(slv->format)' failed.
Aborted by signal Aborted...
ALSA lib pcm_plug.c:68:(snd_pcm_plug_close) plug slaves mismatch
Just when I think I'm about to solve my problem, I always
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