ciao Il giorno Sat, 12 Jan 2008 21:10:56 +0000John Anderson <ardour@xxxxxxxxxxxx> ha scritto: > On Sat, 2008-01-12 at 19:58 +0100, luigi curzi wrote:> > ciao/hello> > i use some applications on pc with a updated debian unstable to> > make some beautiful electronic (:-)) music. i don't have external> > midi controller or some instruments, i only use my pc. i have a> > creative audigy es.> > 1) what configuration can i use in jack for best performance?> > now i use this command line:> > /usr/bin/jackd -v -R -P70 -dalsa -dhw:0 -r48000 -p256 -n2 -P -s -zt> > with a latency of 10.7 ms; is it important latency in my case?> > 2) when i use vsthost with wineasio and some vsts i have some xruns> > and i can hear some poppings? is it a normal problem?> > The basic idea is that if you're hearings pops (xruns) either you need> to run jack with a higher latency, or you need to look at an rt (real> time) kernel.> > Low latency is necessary if you are using a midi controller to drive a> synth on the PC, or if you are recording and you need to do software> monitoring.> with software monitoring do you mean the recording from softwaresources?i have a realtime kernel: 2.6.24-rc5 with realtime patch;i have 1 gigabyte ram with a pentium 4 (2.66 gigahertz, no ht) systemand an audigy es soundcard;in my /etc/security/limits.conf i have:@audio - nice -19@audio - rtprio 95@audio - memlock 512000 and i use this script when system starts:chrt -v -f -p 80 `pgrep softirq-timer`chrt -v -f -p 80 `pgrep softirq-hrtimer`chrt -v -f -p 82 `pgrep IRQ-21` --> my soundcard's irqchrt -v -f -p 98 `pgrep IRQ-8` --> rtc's irqchrt -v -f -p 70 `pidof "jackd"` something wrong? > > 3) as midi arpeggiator i try to use qmidiarp (gpl but old, it is a> > dead project?) and hypercyclic (freeware, new and very good) but i> > can figure out how can use these softwares? precisely i don't know> > how link these programs with jack.> > For an audio program to support jack, the programmers need to use the> jack api. Or if the programs support alsa but not jack, there is an> alsa-jack plugin (or whatever it's called).> qmidiarp has jack support but i don't know how use it to connect thisapplication with a sofsynt (for example);there are some other new (and maybe gpl) arpeggiator? > bye> John> Luigi -- ~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*Io sono lo sbaglio, il momento di confusione, l'inopportuno Non sono niente. Non sarò mai niente. Non posso volere d'essere niente.A parte questo, ho in me tutti i sogni del mondo. F. Pessoa~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*_______________________________________________Linux-audio-user mailing listLinux-audio-user@xxxxxxxxxxxxxxxxxxxxxxxx://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
