[LAU] Ardour/Muse Jack tempo lock

Brent Busby brent at keycorner.org
Sun Aug 10 00:28:35 UTC 2014


I'm having some difficulty getting Ardour 3 and Muse to consistently 
tempo lock to eachother.  By consistently, I don't mean that they'll 
lose sync once I've got it working.  Rather, it seems to be a tricky 
business getting it to happen at all.

It seems to somewhat depend on the order they're started in, but also 
I've noticed that if I change Muse's sync settings, the tempo selection 
can become grayed out -- appropriate when it's a slave, but it never 
becomes active again when it is set as a master again.

Does anyone have any recommendations for this?  I'd prefer Ardour as the 
master, since it's the one handling actual sample data (with measure 
lines in its timeline for real audio waves) and not just sequencer 
playback, but at this point I'd almost take anything that would 
consistently work.  It seems that even if I setup Ardour as Jack 
timebase master and edit its tempo ruler to 140bpm, it will show measure 
lines on its timeline that are appropriate for 140bpm, but Jack programs 
like Muse and Hydrogen will still playback at their default 120bpm, as 
though they're receiving the transport control messages but not the 
tempo sync.  If I have one of them be the master, they disagree about 
what 140bpm is, which means they're still not really synced.  It's very 
frustrating...

-- 
+ Brent A. Busby	 + "We've all heard that a million monkeys
+ Sr. UNIX Systems Admin +  banging on a million typewriters will
+ University of Chicago	 +  eventually reproduce the entire works of
+ James Franck Institute +  Shakespeare.  Now, thanks to the Internet,
+ Materials Research Ctr +  we know this is not true." -Robert Wilensky


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