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.


  • The video keynote is more interesting. They actually show how they implemented it in Garage Band. But only Audio, not MIDI.

  • I agree. I've watched it.

  • edited October 2013

    I still think Morris is on fire today :)

  • edited October 2013

    Double Down Casino ???

    Wtf ?

    Edit: Worked 3rd time ;)

  • Thanks Morris!

  • One odd thing - Doug was careful with hs arrow heads in the IAA section. So it must be significant the the MIDI connection is only Host -> Node. This seems a strange omission?

  • @mgmg4871: thanks for posting this link! Very interesting read.

  • @dwarman: That's correct, IAA is all about the host/node concept and a bit different from the connection graph of Audiobus. A host can MIDI-control its nodes directly without using (and setting up) Virtual MIDI, but the node can only control the host with a small standard set of events (toggle play/pause, rewind, toggle record, etc..)

  • So, say I want to record the output of the nodes' arpeggiator, can I still get that connection back to the host via standard Virtual MIDI?

  • Sure, IAA does not remove the possibility to use plain old Virtual MIDI.

  • One question: there is a difference between normal Background Audio and IAA Background Audio?

    Why I ask this? Because when I use old Background Audio, there is upside screen the lovely Red Line... but with IAA the Red line there isn't....
    @j_liljedahl What do you think?

  • An IAA host can launch an app in background, without having it start its visual user interface or switch it to foreground. This means that an IAA node can be running in the background without being visible in the multi-task view. It becomes visible once you switch to it (from the host or by tapping its icon in the home screen).

  • @j_liljedahl And this is better for CPU & RAM no?? ...graphic it's fat for memory...or no?

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