Hi all! I have tried searching the alsa archives for problems similar to mine, but haven't found anything, so I thought I'd try posting here to see if anyone knows of a solution. I want to record some music using linux/based software. I intend to use a midi sequencer to control soft-synths, and ardour to record audio. I have managed to get ardour and jack working without xruns or other problems, but when I try to control for example the Hydrogen drummachine via midi I get very audible timing errors (something like +/-10ms), whereas using the sequencer built into Hydrogen gives excellent timing. I tried using an external hardware synth also, and the timing problems where there too. I have tried these kernels, and they all had the same problems:
2.4.20 - gentoo patches 2.4.21 - Morton's low latency patches 2.4.22 - Vanilla 2.6.0 - test 5 For the 2.4 kernels I used alsa version 0.9.6, and I have also tried alsa 0.9.2 for the gentoo kernel. The cards I compiled alsa for were emu10k1 and virmidi. The sequencers I used were seq24 and Muse. I tried running Muse both in normal mode and in realtime mode (with modifications made to include/linux/capability.h and libcap installed.) I noticed that alsa refused to build the snd-rtctimer module when I used the 2.4 kernels, so I thought that that might be the problem, and downloaded the 2.6.0 kernel. When I build the alsadrivers included in that kernel I can get snd-rtctimer to build, but I haven't been able to find any info on how to enable it's use. I tried modprobing it, and it loads without errors, but the timing problems remained. Does anyone know how to get reliable midi timing with alsa? Should I use the rtctimer, and in that case what do I put in modules.conf to use it, or is there something else I have to do? I'd be very thankful for any information. Regards Markus ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
