Re: [Jack-Devel] Considering JamRouter, a low-jitter MIDI bridge for all Jack versions

Hi Carlo, I'm tired of discussing this issue and I guess a lot of people prefer that I stopped discussing it ;). I found this one from 2015: http://linux-audio.4202.n7.nabble.com/MIDI-jitter-Was-outfitting-a-computer… And this one from 2010: http://lalists.stanford.edu/lad/2010/07/0189.html Note, I didn't read it again, so I don't know how useful or useless it is. I found this one where I was whining about another issue, but I claimed that "Jack MIDI latency test is ok", much likely it should read "ALSA MIDI latency test" ;). It looks like I already unbound an USB port sharing an IRQ with the HDSP. On my new mobo I can't do this, but the shared IRQ seems not to affect the HDSP at all. I changed my hardware, my current setup looks like this: [rocketmouse@archlinux ~]$ amidi -l Dir Device Name IO hw:0,0 HDSPMx579bcc MIDI 1 IO hw:1,0 TerraTec EWX24/96 MIDI IO hw:4,0,0 Scarlett 18i20 USB MIDI 1 apart from this I switched from an around ten year old AMD machine to an Intel machine, so now a perhaps better timer is available, let alone that I can use a lower audio frame value when launching jackd, which seemingly has impact on the midi-audio-sync-accuracy, too. Actually the audible issue did arise, when I tried to record one external MIDI instrument after the other, if all were recorded at the same time, it was more or less ok. I didn't use my new machine for critical MIDI recordings, maybe I will do during the German North Rhine-Westphalia summer holidays from 2017/07/17 to 2017/08/29. I'm working in childcare, so I have holidays myself at the moment. Regards, Ralf