OMAC Using Midi To Switch Between Apps Remotely
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OMAC Swtich Between Apps Remotely

Open Music App Collaboration (or OMAC) is a set of features that music apps should implement so that they can be linked together via MIDI and run at the same time, in sync with each other. So far only a handful of apps support this, but the number is growing steadily. These features include:

Creation of virtual MIDI ports for each application
Supports MIDI Input and Output
Supporting MIDI Sync messages if your app has an arpeggiator or other tempo based features
Optionally continuing to run in the background when the user switches apps so that it can still respond to or send MIDI
Supporting MIDI CC’s. Volume, Pan, and CC’s for parameters and knobs are important. Apps should both send and receive CC’s.
The option to set a Channel that the app listens for (don’t just do Omni).
Dialogs for managing connections between app and Network sessions
Network MIDI support (optional). App should at least specify if it supports it.

CLICK HERE FOR A LIST OF APPS THAT SUPPORT http://www.whitenoiseaudio.com/apps/genome-midi-sequencer/apps-compatible-with-genome-midi/

MidiBridge is one of the many apps that now supports OMAC for remotely switching apps. It is a comprehensive MIDI tool that iOS is missing and absolutely essential for anyone using MIDI with an iDevice.

It’s a backgroundable virtual MIDI patchbay/router/manipulator that interconnects all MIDI interfaces (external, virtual and network) on an iOS device at a fraction of the cost of equivalent hardware.

What’s New in Version 1.42
– New App Selector module to bind incoming MIDI messages (user specifiable) to invoke fast-switching via MIDI to/from OMAC apps. See our website for full details and a demo video on our youtube channel.

– Support for OMAC fast-switching via MIDI messages.

We thought this was a pretty cool and useful new feature! You can use TouchOSC and and iPhone or iPad Touch to control as well as a midi controller device.

– Connect any MIDI in to any MIDI out (including merge and clone)
– Add full CoreMIDI compatibility to Synthstation 25 and Midi Mobilizer I
– Go wireless between any iDevice or connect to Mac or PC
– Interconnect just about any CoreMIDI virtual app
– Apply keyboard splits, velocity curves and other useful MIDI functions on any MIDI port

– All CoreMIDI physical devices
– Akai Synthstation 25
– Line6 Midi Mobilizer I
– CoreMIDI network (as a session originator or receiver to/from Mac or PC)
– CoreMIDI virtual ports (to/from other apps)

– Runs in background
– Visual indication of connections, MIDI events received/sent/blocked and CoreMIDI network
– Full OMAC music app fast-switch support
– Support for H-Pi microtonal keyboards, including U-PLEX via USB
– Block/allow event filtering by type (Note/Program/Controller/Sysex/Aftertouch/TimeSong) and MIDI channel
– Initiates CoreMIDI network connections from iDevice
– Save/recall module presets
– Keeps track of MIDI interfaces and restores connections/modules automatically
– Streamlined efficient code passes/filters events very quickly

– Velocity curve
– Keyboard range split
– Note remap
– Note transpose
– Velocity split
– Channel remap
– Controller remap

– Drive most CoreMIDI apps (eg. Animoog, GarageBand, SampleTank, BeatMaker) from a Synthstation 25 or original Midi Mobilizer
– Connect Geo synth to SampleTank (see Jordan Rudess on youtube)
– Filter out active sense messages from instruments
– With a powered hub and Apple CCK, connect multiple USB class compliant MIDI devices and route between them
– Connect your battery operated keyboard/drum controller (or SynthStation) to your iDevice and connect wirelessly to perform cable-free
– Connect a MIDI transport surface wirelessly to your computer and move around your studio controlling your DAW transport
– Duplicate MIDI events from one external device to another and to a remote MIDI destination wirelessly at the same time
– Use as an inline MIDI filter, cloner, merger or splitter
– Connect apps that have CoreMIDI network support but no virtual MIDI support to virtual ports by connecting to ‘localhost’ to create a loopback virtual interface (see our website)


Browse our website for a wealth of information to get to grips with CoreMIDI, OMAC and MidiBridge. The full manual for MidiBridge and helpful guides are available there for you to assess whether MidiBridge is suitable for you before you purchase. You’ll find step-by-step recipes for common situations and links to videos too. If you search MidiBridge on youtube there are a host of end-user videos showing how to configure MidiBridge for different situations. Do also contact us if you are unsure about anything and we’ll assess whether MidiBridge will do the job.

Note: iOS5 is recommended and essential for running the Synthstation and Midi Mobilizer I in the background. CoreMIDI available in iOS4.2 and up (although MidiBridge will run on iOS3).

MidiBridge is available for $8.99

  • iPad Loops is an iOS music production blog dedicated to exposing the best iPad apps musicians, producers, and Djs. This is not a database of every app. It is, however, one of useful recommendations from someone with many years in music production. I try to update it on a daily basis (ok sometimes every two days) and I do my best to post useful apps only. My name is Jason Donnelly (Dj Puzzle). You might know me from my royalty free loop packs and sound design. Some of the apps that contain my sounds are Synth One, EG Segments, Hammerhead, Retronyms AudioCopy, Audio Evolution Mobile, LP-5, iPRO.DJSAMPLER, Looptastic. My work is published by Roland, Antares, Magix, Soundtrack Loops, Sample Logic, Acoustica, Loopmasters and many more. Subscribe to our RSS feed below to get updated when new apps are posted.
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