Vaclav Peroutka wrote: >> I have the MAudio Revolution 5.1 and the sound quality is excellent. > > Hello, > > I just bought the M-Audio Revolution 5.1 card today :-) I will play with > it hopefully during weekend. Hope it works for you. I feel responsible now. :-) > > As I am going to experiment with SDR, I somehow need to write full Not sure what SDR is. > duplex application. My idea is to use either multi-threaded app (main > thread and then one for recording and one for playback of processed > data). Or callbacks. Similarly as I used it in AUDMES ( These would be my choices also. > http://audmes.sf.net/ ).Honestly this is my second target - to finish Because of the move from California to Chicago, the sourceforge websites are down until next week, so I couldn't look at the link. > AUDMES to be running on Linux. > > Can somebody skilled recommend me what is the preferred way to write a > full-duplex audio application for ALSA? Or some short source code will > be helpfull as well. I haven't done this so I have no direct experience or recommendation. This is a link from the alsa-project web site for simple duplex program. http://equalarea.com/paul/alsa-audio.html#duplexex His final recommendation is to use jack. ;-) You could look at audacity as it does full duplex. C++, big complex program, through portaudio v19. Check on sourceforge for a program that does what you want, use the code as a template. I saw on the alsa-devel list a recommendation by a couple of the alsa developers that the best way to do this was through the use of poll/select. You could web search as well, as there are probably how-tos for this. If you get no response here, you could ask on alsa-devel. They might or might not respond as their main focus is development of alsa itself. > > Thank you in advance, > Vaclav > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
