On 04/19/2014 10:22 AM, Jörn Nettingsmeier wrote: > On 04/19/2014 03:43 AM, Jonathan E Brickman wrote: >> I realized there was a possibly significant gap in my knowledge of >> hardware, so I searched, and found that there have been a few Firewire >> devices with both audio and MIDI. The questions I have are (a) are any >> of them known to work well with current Linux, and (b) how is the MIDI >> supported on the backend, is it ALSA? > > i have used focusrite sapphires with good success, both the now > discontinued pro26 and the pro56. FFADO makes midi available as a > jackmidi port, so (as others have noted) you will need to run aj2midid > -e to bridge them to ALSA sequencer clients. i just added it as a > post-startup command in qjackctl and forgot about it. > can't comment on MIDI timing performance, i only ever used it for > controllers, but i don't see any reason to have doubts. > One of the great things about Firewire Audio is the iso-synchronous protocol that is used there. Audio + Midi are sent in the same data-stream, interleaved. As opposed to most PCI and USB sound-cards firewire midi is not a separated on the bus or data-link level. It still depends on what the hardware does but everything starting at the firewire-end all the way up to jack-midi can be in perfect sync, zero jitter, identical latency as audio. best, robin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
