[ardour-users] sync problem

Paul Davis paul at linuxaudiosystems.com
Sun Mar 26 14:06:56 PST 2006

On Sun, 2006-03-26 at 16:35 -0500, Hector Centeno-Garcia wrote:
> Hi,
> Yesterday I was trying to sync ardour and an AKAI MPC 1000 using first 

the MPC doesn't slave to MTC as far as i know. it can use MIDI Clock
and/or MIDI Song Position Pointer. Ardour doesn't generate or response
to either of these message types (yet). This is because of its root in a
studio environment rather than a music-production environment - the
class of devices i was interested in sync-ing with handle MTC better or
instead of these other types of signals (and note, they are not a
replacement for MTC, or vice versa)

> had to manually set the location on the MPC). Also we found that when 
> ardour was set to record the MPC was also set to record so it wasn't 
> possible to record in ardour without erasing something in the MPC. 

its likely that if you ask ardour to send MMC, it will send Record-
Enable message with the "ID" field set to "all". not sure what cubase
does. maybe it doesn't bother to send RecordEnable at all, for this very
reason. the behaviour should be configurable, i suppose.

> wondering what is the purpose of the "Trace input" and "Trace output" 
> buttons and the tree diamonds in front of them and labeled MTC MMC and 
> MIDI Parameter Control. Are they supposed to blink when there is a sync 
> signal detected? They always remain lit in red. Bellow those there is a 
> list of options and I'm not sure if the one that says "MMC control" 
> means "receive MMC control" as there is another one that says "send MMC 
> control".

the trace control whether or not ardour prints a text trace of all MIDI
i/o to its standard error output. nothing more or less.


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