[LAD] Trying to understand Jack Midi, (Arpage, Dino)

Paul Davis paul at linuxaudiosystems.com
Mon Feb 15 17:31:19 UTC 2010

On Mon, Feb 15, 2010 at 11:35 AM,  <fons at kokkinizita.net> wrote:
> On Mon, Feb 15, 2010 at 04:18:03PM +0000, james morris wrote:
>> 1) Is there any way to improve Jack Midi timing when the audio driver has
>> a high latency?
> I don't think so. If you set the audio period size to
> e.g. 4096, jack will call clients only every 85ms, and
> midi gets delayed as well.

fons, recall the difference between latency and jitter. the problem
with the -Xseq backend (and -Xraw too) is that it causes really bad
jitter in addition to whatever latency is present. a2jmidid (at least
the current git version) doesn't do this - it keeps the jitter as low
as possible and the latency is constant.

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