Sending MIDI from Logic to MAX

Anyone? Anyone? Bueller?

hi. i am a logic/max user and have run into problems with the IAC buss as well.

I think your best bet is to use rewire and send midi data via the rewire object. Rewire has its problems as well, though Logic 8 claims to have better rewire implementation (I dont have a copy yet).

I've found that rewire with max/logic only seems to work if I do things in a particular order-

Open Logic, open/create the song I want. Make sure the song is fully loaded.

Open max. set the audio driver to ad_rewire. Turn audio on.

If I dont do everything in exactly that order, Max will freeze and I can't even close it with a force quit, i have to reboot. Its a big pain, but this seems to work. Once you have that up and going....

If you havent, create a rewire object in logic's environment and put it in your arrange page. In the parameters for the rewire object should say MaxMSP under the 'device'.

If you create a notein object in max and double click on it, you should see a rewire option in the pop up menu.

Any notes you create with the rewire object should be sent to max with good timing.

When you close everything, be sure to quit Max first, then logic.

Another solution is to create a pluggo plugin and run it in logic. I prefer rewire (even if it is a hassle) because i can edit more seamlessly while I'm working.

I almost forgot...

For the audio returns, select an audio object in logic, under it's channel parameter select Rewire Stereo -> MaxMSP -> Rewire 1&2

Now dac~ 1 2 will send audio to that audio object in logic.

I got Logic 8 recently. So far I have just been using Max to send MIDI to Logic, which is trivial (just select "from Max/MSP 1/2" as the midi out). I was wondering how to go the other way so I will have to give this a shot. Thanks for the info, Nick.

If there are any problems with this approach, another option may be to create a VST plugin with Max, and once you have the MIDI data inside there you can do anything you want like sending it over UDP (OSC-style communication). Maybe overkill?

-Adam

Oh and obviously if you are going to create a VST plugin, that pretty much solves the problem anyway. I was just thinking that sending the data to Max is much more useful if you are in the middle of developing a synth in Max.

the thing about 'from MaxMSP as midi out' is that it is actually just the IAC bus creating a specific port for MaxMSP.

I've encountered all kinds of timing problems trying to send midi data over the IAC bus, which are not the due to anything within max.

As an example, I would create a rewire-synced note generator that would pump out a midi note at 64th note intervals. If I recorded the midi output over the MaxMSP midi port (i.e. the IAC bus) into logic, the timing would be way off and not in any way consistent. Some notes would be early, others late, some would not show up at all.

However, if I used the same generator to create a simple sine 'blip' at 64th note intervals and then recorded the audio ouput into logic..the timing would be perfect. A small amount of latency but all I had to do was shift the first blip into place and the rest would follow.

Ive resorted to using vst~ to load my instruments in max if I want to send any midi data from max to commercial vst apps. Its all a bit aggravating.

Oh, and if you DO just want to use the IAC bus, its a lot simpler to just create a new instrument object in logic and set its port to
"to MaxMSP 1" rather than using rewire. But dont say I didnt warn you about the timing!

Interesting. I have not had many issues with timing using this approach. I am also doing metro-based event sequencing and I have not had many issues with timing that so many other people complain about (note that I only ever use a single master metro; I never run multiple metros in parallel). If I am generating a large amount of MIDI data simultaneously then I sometimes get a hiccup (I'm pretty sure it's on the Max side), but it has been easy enough to clean things up in Logic after a recording.

Perhaps it is because I have a Core 2 Duo Powerbook with enough horsepower, and/or perhaps it is because Logic 8 has improved their product? I think I remember reading that Apple really improved some MIDI timing stuff in this version, but I have no idea if that applies to the IAC.

But... I don't know if I've tried running a lot of 64th note generators at once, so maybe I just haven't pushed things hard enough? If I remember this the next time I get a chance, I can try it out. Feel free to send me any patches to try to recreate problems you've had and we can try to determine if Logic 8 has improved the situation.

-Adam

I would love to hear that this is a fault of logic 7 and not the IAC because I doubt the OS developers are going to care too much about my problem!

simple test patch -