MIDI sync / clock from iOS to external gear, 2019
I've read all the threads I can find about syncing MIDI, and learned a ton! What a great resource this AB Forum is for a lurker like me as I dive into the world of iPad music. I'm coming from the world of hardware synths, keyboards, stomp boxes, and loopers.
Because many of the posts are more than a year old, and so much is changing so fast with all the rapid improvements in iOS music apps, I'm afraid I might be missing the best solution right now, June 2019. So I decided it's time to ask directly.
My specific scenario: I'm building a setup to use iOS loopers (Loopy, Quantilop, Ostinator) to loop and mix sounds I create externally with an acoustic instrument and a chain of Eventide stomp boxes (Pitchfactor, Modfactor, Timefactor). Because I play ambient with heavy delays, the stomp boxes need to be in sync with the loopers.
From what I've learned, I want the master time clock to emanate from the iPad, and make the stomp boxes the slaves. Simple clock, not transport commands. I'm using a iConnect Audio 4+ for I/O.
I have a basic working knowledge of AB3, AUM, and ApeMatrix. I don't have an iOS DAW; I send tracks via AUM > Audio4+ to Logic Pro on my laptop.
Question: what is the best source for the MIDI clock? AUM? AB3? ApeMatrix? Something else? Should I use Link (not clear yet exactly what that is) or some particular settings?
Although my immediate need is to send clock to the externals, I want to design a setup that will be rock solid for sequencing and sound production within the iPad too.
If you're curious, my instrument is an orchestral clarinet with a pickup. From the pickup on, the effects and everything else works exactly as it would for a guitar. Listen here: ThinAirX.com
Besides seeking help for my specific situation, I'm hoping this will open into a discussion of the current state of MIDI sync taking into account all the recent upgrades and newcomers.