My colleague Curtis and I have been wracking our brains for several weeks trying to capture output from a Delta66 sound card, and to use ices2 and icecast to support four internet radio streams. We replaced a failed computer on which the system had been running without error, and have been unable to duplicate that performance on the new system. The system uses 1 GB ram, a dual core P4 processor at 3.0 GHz, and runs Debian testing with kernel 2.6.30, and alsa version 1.0.20. I hope someone can help us. The Delta66 is configured to provide four monaural channels of 22050 Hz audio, each one feeding a separate instance of ices2, with all four streams offered up by a single instance of icecast. It all works as we expect it to, except that unacceptable xrun errors occur, and the dropping of samples renders the results very unsatisfactory. We are volunteers with the Radio Reading Service of the Rockies, Curtis is at the studios in Boulder, Colorado, and I consult with him remotely. We both use Linux with console text mode applications that work well with screen readers. The ices2 and icecast combination work well, without xruns or dropped samples, when the inputs are playlists, it's beautiful, no problems. But when the four inputs are from capturing the Delta66 produced audio sources, the xruns and dropouts appear. They get worse as the number of streams is increased from 1, to 2, to 3, etc., If anyone could take a look at our sound card configuration files to help us spot the problem, we would greatly appreciate it. They can be found at: http://www.hallenbeck.ftml.net/asound.conf, definitions of four playback and four capture devices. http://www.hallenbeck.ftml.net/asound.state, the Delta66 (ice1712) configuration file. http://www.hallenbeck.ftml.net/mixersettings, output from amixer showing simple mixer controls and their settings. http://www.hallenbeck.ftml.net/ices-alsa.xml, interface from the streaming software to the sound card, just in case. We have about exhausted our ideas, and have not found much help googling, or in the alsa documentation sources. We really need someone's help here. Any additional information can easily be generated and posted. Thanks, Chuck -- The Moon is Waxing Crescent (33% of Full) My web site: www.hallenbeck.ftml.net Audio editor, weblog: edway.wordpress.com -------- The secret of a happy marriage is to treat all disasters as incidents, and none of the incidents as a disaster. -- Harold Nicolson ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
