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.
apeMatrix Snapshot Pad is AWESOME!!! (Tutorial)
Someone asked on another thread how the Snapshot Pad in apeMatrix works, or if anyone had got it to work. I don't think anyone ever answered, and I didn't because I hadn't figured it out yet.
I didn't actually figure it out on my own... had to get an explanation from the developer. It's explained in the in-app guide, but it's a bit confusing and implies a different function than what it actually is. He's going to clarify that in an update.
Ok, so this is what the Snapshot Pad does and how to use it. The Snapshot pad sort of dissolves/fades/interpolates/morph between the top 4 presets. Only the catch here is that it's actually only dissolving between each preset's Mixer settings. But that alone can be pretty spectacular.
It's not really just a dissolve/fade/interpolation. It's something called "Hyper Vectorial Synthesis" but for simplicity, I'm going to refer to it as a "morph".
The guide makes it sound like it morphs between different presets that may even have different apps saved. It doesn't, but you can achieve something similar by morphing the Mixer settings.
Here's a very simple setup on the main grid to illustrate:
- Load 4 different AU or IAA sound apps and send them all one note latched on the keyboard
- Open the Mixer and turn the volume levels of all the apps loaded down to zero accept the first one.
- Name and save a preset for the setup that has just the first app playing. I think it's easier to just make a preset bank, name it, then save each of the 4 presets you're making into the same bank. You can do this with just 2 or 3 presets if you wish.
- Open the Mixer back up, turn down the level of the first app down, and turn the level of the second app up. Then name and save the second preset to your bank.
- Repeat for the other 2 apps.
- Launch the Snapshot Pad. You should see the 4 presets you just created on each of the Snapshot Pad corners. Now you can use your finger to scrub between each of the Snapshot Pad's corners to gradually morph from one preset to another in any direction and in varying distances between them. You can quickly activate each preset without scrubbing between them by just touching that preset's corner. The level is higher toward the outer edge of each pad's corner.
Now, for a more complex setup:
You can create complex arrangements, complete with effects and midi sequencers like Rozeta or SPA driving your sounds on each of the 3 grids. The way I did it was create the arrangement I want on the main grid, then turn down all the levels of all the sound generators to zero. Then create a whole new set up with other apps on the second and third grids. Also with their own sequencers and effects.
I turn the levels down on each grid layout that I'm not using so that I can hear just that grid.
Now, create a new bank for 4 new Mixer presets. Leave the master volume slider all the way down on grids 2 and 3 and get the main grid's Mixer set up like you want. Adjust the levels, pans, etc. (the Snapshot Pad doesn't morph between app parameter settings, etc. Just the Mixer settings that include sound level and pans)
Do the same thing for grid 2, ie. turn down the main volume levels of grid 1 and 3, set up grid 2 the way you want, then save your second preset to the bank. Repeat the process for grid 3.
For the 4th preset, adjust the levels of all 3 mixers to play at once, but turn down the mixer volume level for individual apps within each grid. So that, you'll hear just parts of each of the 3 grids all playing at once. Save this global mixer setup as your 4th preset.
(A preset will save ALL of the Mixer settings from each of the 3 grids at once)
Now, launch the Snapshot Pad again and scrub between each of the 4 Preset Mixer setups. Or, tap each corner to switch between each of the 4 presets. The change is immediate this way, but not abrupt.
You could probably get a similar effect in AB3 for AUM by setting up individual sub-mixes on given channels, then sliding one level slider up while sliding the other one down. That would certainly be a dissolve transition only and not this "Hyper Vectorial Synthesis" that apeMatrix is doing.
This app is even more fun with this Snapshot feature! Makes it easier to kind of play/perform your mixes on one big 4-way pad.