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 StoreAudiobus is the app that makes the rest of your setup better.
Multitrack DAW question
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Comments
The knob marked “no-clip” controls gain of signal I to the effect and Mix is wet/dry mix
That adjusts how much of the track’s signal gets sent to the FX Bus.
Each FX chain (both channel insert fx and the bus fix) let you adjust the gain into the fx.
The Send knob is a standard send pot. It sets how much to send to the bus. That let’s you send different amounts of signal from the different tracks.
Try it.
Send knobs set up your multi source mix into the fx, no clip is like a master volume that saves you going back and adjusting multilple send knobs if you get clipping. It preserves the relative source levels.
The mix knob allows for the possibility of a plugin that lacks dry/wet mix control. Also, if you have distortion going into delay, then into reverb and like the relative balance of those effects, but then decide you need a little more of the original dry signal cutting through, you can use the mix knob to do it. Otherwise, you’d have to adjust the wet/dry knobs of 3 different AUs, which would change the nature of the fx - (delays would be less fuzzy, reverb too, with other frequencies present in the tail.
The last problem sounds like cpu and memory limit issues. Cpu stress causes crackles and stuttering when realtime audio deadlines get missed and iOS will terminate apps without warning if they exceed memory caps.