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.

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Audiobus is the app that makes the rest of your setup better.

Wotja speed tutorial: everlasting Klaus Wiese mixtape

This is an attempt at a quick and easy introduction to the main elements of Wotja's engines and interface. It's written for the 2018 iOS versions but will work in any 2017–18 version of Wotja as well as in Noatikl 3 and Mixtikl 7, though if you're working with the free version after the three-day trial has expired you'll need to reduce the pattern length to hear it recompose itself within the three-minute play time.

If you're on iPad, have Wotja open in split screen alongside these instructions in your browser so you don't have to keep looking back & forth. (tl;dr version: take Cosmic bass 1, add a third, fifth, and seventh to the scale rule, set the chord depth to 3, and wait 64 bars. The resulting file will come out something like this; you may need to copy that link, paste it into a new window, and chop the "denied:" off the front to get it to open as a file.)

  1. Tap Create New, and select Music Mix (manual).
  2. From the Templates list, go to IM3 Gen Ambiences and select Cosmic bass 1, then hit the New button at top right and tap OK.
  3. In the cell view, tap the pink Cosmic bass 1 object, and select Edit.
  4. In the left-hand pane, tap Rules, and then in the right-hand pane tap Scale Rules.
  5. Raise the M3, 5, and M7 sliders to around halfway, then tap Voices at upper left to return to the main pane.
  6. Now tap Chords, and tap the + sign at the right of the Depth slider to raise it from 2 to 3.
  7. Tap Mix at top left to return to the cell view, and the left-chevron at top left to Save & Close.

What you've created is a drone piece that will endlessly recompose itself every 64 bars (the 15360 beats set as the fixed length under Patterns in the generative voice; depending on tempo, it'll be around every three minutes) in a new key with a new selection. (The key-change effect is inspired by Na-Koja-Abad's Nomad: Outworld.)

  • Optional: in the files view, tap Edit at upper right, select your newly-created file, and rename it from "Cosmic bass 1" to "Robotische Klangschalen".
  • Optional: go back into the cell view and tap the Poly 4 button to poke around in the synth network. Tap any object to see what's inside it. You'll see the voice for the Cosmic bass 1 template is comprised of two built-in wavetable synth patches, Specupad and Spectral Keys, plus a single-oscillator sine modulated by an LFO to give the patch some movement. There are also FM and granular synths available.
  • Optional: add another generative voice to fill the sound out with some warm tuned noise. Copy and paste the Cosmic bass 1 voice (by tapping on it, hitting Copy, tapping on it again, and hitting Paste), chain the new voice to MIDI channel 2 (by drawing a line from the new voice to under MIDI channel 1 and joining it to the first new channel that appears), and go into Channel 1's Poly 4 object and choose Export to Clipboard from the actions icon at bottom right, then go into the Poly 4 object for channel 2 and select Import from Clipboard to replace the default chain; then switch the wavetable sounds in the second and third modules to the Outside patch. If you like you can widen the panning setting using the scrollbar in the upper screen region.
  • Optional: use the free MidiTrail (which also works in split screen) to monitor the pitches generated and give yourself a free video while you're at it.
  • Optional good housekeeping 1: rename your voices (eg to "Cosmic bass 1 chorded" and "panned Outsides + sine"), which is a good thing to do any time you modify one of the built-in patches.
  • Optional good housekeeping 2: in the Rules for both voices, turn the Harmonise switch to on. This has no significant impact on the above sound settings other than keeping the oscillator elements in harmony, but you'll need it if you want to play with this piece further, eg to set the sound on that second voice to something more musical than a wash of noise, or indeed to add more voices.

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