Le jeudi 07 décembre 2006 à 19:19 +0000, Mario Rossi a écrit : > Reading ALSA documentation about dmix > > http://alsa.opensrc.org/DmixPlugin > > At the very bottom, there is this interesting info about dmix. > Basically the suggestion is... to use JACK (???). Does anybody know > whether it exists a dmix equivalent in JACK with better results? > > " > Can dmix be used within a single program to effectively mix different > "voices"? Does its latency permit scheduling with (at least) > single-frame accuracy (e.g., I start VoiceA? and wish to setup and > schedule VoiceB? to be "added to the mix" at a certain point)? If > someone knows how to do this, some guidance or a nudge in the right > direction would be greatly appreciated. > > --- > > Answer: Latency depends on period and buffer size. AFAIK dmix is not > designed as sample-accurate (because it is usually not needed on > general purpose audio system and will make the design quite complex). > > If you need sample-accurate and fully syncronized mixer/router, you > should consider using the Jack http://jackaudio.org/. Large number of > Linux audio applications, where sample-accurate mixing is needed, > support Jack. > > On the other hand, overall latency of the audio system will still > mostly depend on period size. As small as your period size can be, as > low latecy you will get. > > Of course, low latency needs good task scheduler in kernel. If you > start getting xruns on low latency audio setup, you should use some > low-latency/realtime kernel patches. I reccomend Ingo Molnar's > realtime preempt http://people.redhat.com/mingo/realtime-preempt/ or > Con Colivas patch set http://members.optusnet.com.au/ckolivas/kernel/. > > "
Hi, I've tried some time ago to use Ekiga with JACK, but without succes. Here is how I proceded : http://bugzilla.gnome.org/show_bug.cgi?id=335105 I hope this will help... Regards, Yannick > _______________________________________________ > ekiga-list mailing list > [email protected] > http://mail.gnome.org/mailman/listinfo/ekiga-list > -- Me joindre en téléphonie IP / vidéoconférence ? sip:[EMAIL PROTECTED] _______________________________________________ ekiga-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/ekiga-list
