Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
AUM sending bad MIDI clock?
Now that I've finally purchased AUM and done my first steps, I've synced it to various apps, believing that as long as I work at 44100Hz sampling rate like I've read in a few posts, things would be fine.
But they aren't.
No matter what sync slave I'm connecting, the slave will drift apart to about one sixteenth note after about 3 minutes.
As if AUM used different time bases for internal use and for sending MIDI clock.
The last time I've seen this behavior was in BeatMaker 2 and with the old KORG WIST, both adjusting bpm at the start and then running in "free-wheel" mode.
This cannot be corrected using latency offset adjustment because AUM apparently sends MIDI clock pulses at the wrong rate.
I wonder if there's a hidden AUM setting to fix this, so if anybody can help, you're very welcome