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Getting MIDI out there and between tracks in Logic.
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There’s some limitations on the abilities to freely route MIDI in Logic. Short: it’s no AUM on that matter. Known workarounds - like AudioVeek’s MIDI route plug-in - are no avail as this plugin crashes Logic.
This morning I was experimenting with FAC’s Envolver (loaded as a MIDI-controlled effect with audio side-chained in) and I wanted to use the MIDI generated by it on different tracks in real-time (instead of first recording it on the Envolver track and then copying it elsewhere). To my surprise I could load Loopy AU behind it as an AUDIO effect, add a MIDI in in that Loopy and set its destination to AUM (and Logic’s virtual MIDI out). And then from AUM get it back in.
This same technique allows you to feed MIDI from one track in another (see video on twitter, I have no other video repository).
It’s a bit of a proof of concept and I haven’t experimented further with it yet, but thought it worth sharing here. Unless I miss something obvious that makes this a convoluted workaround for something that’s possible in a more obvious way. Would not be the first time I find myself in that situation.. 
Comments
audio from drummer -> Envolver (allowing you to play with rise, threshold…) -> loopy grabbing the MIDI from Envolver and sending it to AUM -> AUM sending MIDI back to Logic -> on the Zeeon track there’s @klownshed ’s script converting the CC originally coming from Envolver to automating filter cut off in Zeeon (via the learn function in scripter..) [Zeeon track needs to be armed]
There been a few apps that work the same as Audio Veeks midi route plugin. One I remember from a DAW dev who made that Tabletop style modular daw for the life of me I forgotten the name now. Wonder if they would work in Logic.
how's the midi timing that way?
Brian Howarth’s RouteMIDI doesn’t work..
ok at a first glance, but the procedure somehow seems CPU hungry
With Mozaic’s PolyMono script (patchstorage, it didn’t work out with Polythemus) you can make your monosynths polyphonic or give each note of your chord its separate instrument/track within Logic.
wow, thats great!
sending a midi track to a fx does work normal in logic ios?
Can you give an example, not sure what you're asking?
Maybe he means the way, in aum for example, you can pipe midi into an fx app like Bleass voices to manipulate the audio that Bleass voices is processing
Oh yes! Then you have to load Bleass Voices as a ‘MIDI controlled effect’ on a track (and pipe the audio in via a sidechain).
having a midi track trigger a fx (for instance a filter) in another track.
is this possible natively?
I don't think so. That's why I was looking for a workaround as shown above.
thats a basic, a must for a daw
This is not even a basic function on Logic Pro for Mac - You have to involve the MIDI Environment to map MIDI...
Has anything changed in the last year to make this easier?
Yes.
I did see that but haven’t been able to work out how to use it to automate something with envolver’s midi output.
Anyone else managed to make this work? I just can’t figure it out.
I’ve got as far as adding the native modifier midi plugin and a gain plugin to the track I want to ‘automate’. I’ve been able to midi learn the gain knob from the gain plugin to the modifier plugin output event.
I don’t know how to get the midi from envolver into the input event for the modifier plugin. I’ve tried midi learn but it doesn’t hear it. I kinda didn’t think it would work because envolver is on a different track, and it’s technically an audio plugin. Looking at this midi output from a track ends at the instrument plugin.
Unless I’m missing something, I’m down to routing the midi with a plugin. Presumably the Audioveek one still isn’t useful, though I don’t own it. Can anyone help with this bit?
I don't think Logic's audio fx can output MIDI. FAC Envolver isn't available for the Mac so I can't try it right now. I don't think any of my audio fx plugins on the Mac output MIDI...
How about converting the audio you're using Enolver on to a quick sampler and using envolver on an instrument track?
Not pure audio effects, but some audio effects that support midi-input (and output) can be loaded as Midi Controlled Effects (audio needs to be 'side-chained' in though) and the midi output is then selectable in the 'Internal Midi In' in the inspector.
Mela 5 is one such AUv3 that works on both Mac and iOS.
(Use the Envelope Follower > Audio-to-Mod and send that output to a Control Change module on a midi lane).
I’m not sure I’m understanding. Do you mean so I can get it all on one track?
Ah didn’t realise Mela 5 had an envelope follower. I don’t own the IAP - might be time to get it!
I wonder if I can do this with Drambo 🤔
Definitely!
No, I mean instead of using envolver on an audio track, convert that audio to a sample then use envolver on that track which is now an instrument track, which might make getting the MIDI out of envolver possible. If you slice the audio into convenient chunks you can play back each chunk from a different MIDI note which will make starting playback anywhere in the timeline less of an issue.
But once you've got the MIDI out you can record it and then go back to using the original audio track anyway. You can use the captured midi on its own track to modulate the MIDI of another.
I’ve got Drambo showing up in the internal midi in dropdown, so that’s good. For anyone else doing this, it only works if you add it in the instrument slot on a track.
I can’t see a sidechain option for Drambo though in the au toolbar. I think it normally shows up next to the automation dropdown? Or did you not mean sidechain like that? I did think I could use a bus but the aux channel has no instrument slot.
Try loading Drambo as 'Midi Controlled Effect' in an instrument slot.
(If you can't see it on first try load the Drambo (mFX) to an audio slot first and re-try).
Once you've got Drambo loaded as a 'Midi Controlled Effect' you'll see the side-chain option.
That’s it! Got it!
I also then realised I can load Envolver in the same way into an instrument slot, then it has sidechain and appears in the internal midi input dropdown just like Drambo.
The gain knob is automating beautifully along with the beat.
Only issue is that the track with the modifier plugin has to be armed for it to work. I’m guessing this is because Logic is expecting me to record the midi. I just want it to play in real time so I can automate the envolver properties.
I’ll try switching out the modifier plugin for other options to see if I can make it work without having to arm the track.
Thanks @Samu and @klownshed 🍻
No need to arm for recording...
...just enabled 'Input Monitoring' on the track that gets its midi from another track.
(If you don't have the I on the midi-tracks customize the track headers and switch on Input Monitoring).