On Mon, 21 May 2007, David Adler wrote: > nice sounds - seems quite cpu-hungry, i get lots of xruns when polyphony > exeeds about three notes, but it might be related to my jack/priority > setup and not phasex. Yes, I'll be the first to agree that there's still a lot of room for optimization. For reference, on my 2GHz athlon-xp box, I just barely get full polyphony (six voices by default) out of two simultaneous instances undersampled to 48k with jack running at 96k. Not great, but not bad for code that would give me a max polyphony of 3 (requiring 3 instances) just a few months ago. Optimization is already on the roadmap, and it's the first priority after the patch selection system gets reworked a bit. If you're maxing out your CPU, you'll get xruns no matter how fine tuned your system is, so I wouldn't blame the jack/priority setup just yet. If you have a 1GHz or below processor, I would recommend editing src/phasex.h, changing NUM_VOICES from 6 to 3, and recompiling. The configure script also supports an '--enable-arch=' flag to get gcc to optimize for specific processors. Also, you may want to use the Mono MultiKey mode whenever you can get away with it. This keymode uses only one voice and maps the midi keys in play round-robin, in order of play, to the Midi Key sourced oscillators. BTW, could you give me some more details about your system, like cpu type/speed, kernel, ram, sample rate, etc. I might be able to give better advice. Cheers, --ww _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
