[Ardour-Dev] zita-a2j and capture alignment
bjb-ardour-dev at deus.net
Sat Sep 7 07:27:21 PDT 2013
In my continued quest to use a pair of clock-synched Delta 1010 cards
together to record a whole live band I've recently been using zita-a2j rather
than the alsa pcm_multi approach. It is much less prone to xruns and generally
works well but I've still got a couple of niggles/questions.
1) How do the -n/-p parameters relate to their counterparts in jack? Should
I be specifying exactly the same -n/-p pair for the closest sync?
2) When I capture a mix of jack driven and zita-a2j driven inputs, the
alighment is out. I don't just mean audio latency, I mean that the
captured regions have different start times. I'm guessing something is
trying to be smart about re-aligning the two sources but it's not
getting it right. In addition, by moving the region starts it seems
to break the edit-group synching of region edits.
Note that I'm running these cards clock synched at the same sample rate so
that oughtn't be an issue.
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