[ardour-dev] Re: MTC & MMC ...

Dave Phillips dlphilp at bright.net
Fri Sep 24 07:17:37 PDT 2004

Paul Davis wrote:

>> Some correction: Yes, I'm able to slave Seq+ to MTC coming from 
>>Ardour, *but* when I tried it two days ago I discovered that control is 
>>very bad when the receiving sequence has a lot of tempo changes. It 
>>sounded like the sequencer was always trying to catch up to the 
>>timecode. Anyone have any suggestions for fixing that situation ?
>it can't be fixed. ardour's MTC output stream is bursty and nothing
>will ever correctly sync to it. we require usec-resolution timers to
>make this work, something that no regular linux kernel has, and that
>even with the HRT patch, don't seem to work too well.
Well, it's disappointing but I think I can work around it. I'll have to 
forego the use of the external sequencer as a slave, but perhaps in 
future I'll be able to use it as the timecode master. Meanwhile of 
course I can simply save my work in Seq+ as standard MIDI files and use 
them in either MusE or Rosegarden. At that point I can simply rely on 
JACK for the sync stuff.

>> I've still not got the hang of getting Ardour to receive MTC. I'm also 
>>still learning the capabilities of the Tascam D1000 and will work with 
>>Ron Parker to discover how Ardour and the mixer can best work together. 
>>The D1000 sends and receives MMC, it also receives MTC.
>to get that work as well as possible, i just need more time at the
>studio ironing out the glitches in ardour's slave support.
Cool. Let me know if there are any specific tests you'd like me to run 
with this gear.

Best regards,


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