On Tue, 19 Jun 2018 07:45:40 -0700 (PDT), Len Ovens wrote: >Beside that jitter has to be pretty low frequency to be an issue. Not >that jitter is ok, but that MIDI itself is an issue already before it >gets to the computer. Hi Len, I won't comment this claim or any other claim in this thread. Measuring a system by itself could be questioned, but The OP should consider to measure different MIDI interfaces, the results might or might not be something to keep in mind. $ alsa-midi-latency-test -l The output of the above command does show the port(s), replace xy:z of the below command by a port. Connect MIDI in with MIDI out and run alsa-midi-latency-test -Rrw=5 -ixy:z -oxy:z After running the above test, the OP should chose the best MIDI interface and launch jackd with and without alsarawidi. IOW the OP should record a four-to-the-floor MIDI track and after that record an external MIDI instrument's kick several times, to one audio track after the other. How exact are all the kicks played in unisone? Is it just a phasing, or an early reflection alike effect the OP hears? Is there a difference between the tracks recorded with and without alsarawidi? There's no need to answer this questions by an email. Everybody interested could do this, just to verify if it's something important to the tester. https://github.com/koppi/alsa-midi-latency-test Regards, Ralf _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
