Tempo Track – Conductor Track – Tempo Map | reading from a sequencer

Mar 5, 2011 at 6:24pm

Tempo Track – Conductor Track – Tempo Map | reading from a sequencer


Every sequencer I have worked with (Sonar, Cubase, Digital Performer, Logic) has a tempo track/Conductor Track/Tempo Map (they are named differently depending on which sequencer you’re using).

Is there a way to pull into max that tempo map/track in real time to see the changes? I have found that using [Match 241 nn] I can receive the hour|minute|second|frame of the MTC to see exactly where I am at in a running midi sequence. Is there a way to do the same thing with a tempo map/track? I want to see the tempos changing as they are happening in real time.

Any thoughts or ideas?

Most grateful for you help.

Dave Zabriskie

Mar 5, 2011 at 11:20pm

What about running the sequencer as rewire slave and reading the transport information with [rewire~]?


Mar 6, 2011 at 12:07am

Or you could receive MIDI clock and calculate BPM from it, like this.

– Pasted Max Patch, click to expand. –
Mar 8, 2011 at 11:22pm

hey you may want to check John MacCallum’s “midifile” class on cnmat which imports any standard midi file. its timing is not reliable but i just use it to parse data via the “dump” function. export midi from finale, dp, or whatever, load into midifile, dump track 0 (the conductor track you want) to a coll. i attached a patch that does this. the data can be used for anything like plotting a graph of tempo/meter change, or you could automate something with solid timing (like phasor~). this patch loads with a smf i made that has a almost constantly changing tempo – the coll gets them all prepended by real midi time stamps which are actually microseconds µs! then you just have to thin out the data.

  1. mastertrk0.zip
Mar 17, 2011 at 7:36pm

Thanks for your help. I haven’t figured this out yet. Driftpattern, I have a couple of questions I’m going to throw at you in a separate email so I don’t bog down this forum site.



Mar 17, 2011 at 7:39pm

Drift, do you have an email where I can contact you? Mine is in my profile. I downloaded your file, but I have several questions I need to ask.



You must be logged in to reply to this topic.