On Wed, Dec 24, 2003 at 08:28:48PM +0200, Oded Arbel wrote:
> On Wednesday 24 December 2003 18:43, Ilya Konstantinov wrote:
> > I must say it's sad that on Linux at 2003
> > multiplexing multiple sound sources still doesn't work like magic.
> 
> It works for me. 

Using artsdsp for Flash?
 
> > (And no, aRts is no solution. Its' lags are inacceptable for
> > movies/games.)
> 
> Its configurable, and even the default of half a second  is usable for most 
> sound requirements (playing MP3s and such). if you want low-latency gaming, 
> configure it to have a smaller buffer, and it it has a higher latency then 
> advertised, suid root the daemon and tell it to use priority scheduling.

The sound is choppy with a low latency as soon as I move windows
around. With a high latency, movies are watching movies becomes
annoying (voice doesn't match lips). I wonder if the situation improved
now that I'm on 2.6...

Also, I run multiple X displays, one for me and one for my father, and
aRts doesn't handle this situation gracefully -- one aRts will block
the other aRts.

ALSA's dmix plugin can mix multiple sources together (in user space)
but aRts is completely silent when I direct it to a dmix-based ALSA sound
device.

As of today, mixing multiple sound sources on Linux is not trivial and
flaky, involving lots of hacks (aoss, artsdsp, dmix...) and custom
tuning. Why can't it *just work*, as it does on Windows 2000?

IMO, the best solution would be for ALSA to add a software-mixing
virtual sound card, possibly one which'd involve a user-space mixing
app. But, as Linus would say, "Talk is cheap, show me the code".

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