Frobulator

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Frobulator is an experimental stereo modulated filter and delay effect.

Price Free
Author Matthew Caldwell
Type Effect
Effect type Equalizer, Filter, Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.35714 (14), current: 4.35714 (14)
Version 1.2.2
Released 07/14/2015
Updated 02/07/2020
Frobulator is an experimental stereo modulated filter and delay effect. A combination of time and frequency domain processing gives it a different sound to a normal echo box. The special "FAIL" mode adds chaotic variations driven by an iterative map -- perfect for those times when your music is just too harmonious and listenable.

Apply Frobulator to live audio input, or connect with other music apps like GarageBand via Inter-App Audio or Audiobus. Frobulator supports Audiobus state saving and has IAA host transport controls.

NB: to avoid some nasty feedback, Frobulator is muted by default if you're using the built-in microphone and speakers on your iOS device. If you aren't getting any sound out, try pressing the mute button. (You can now disable the automatic muting entirely from the iOS Settings.)

Note that Frobulator does *not* provide an Audio Unit extension. Porting the underlying tech to the AUv3 environment is sadly not practical. I know this is disappointing, but Frobulator and its sibling apps are stuck in their historical moment; when IAA goes away, so will they. Perhaps something else will come along to take their place...

Version 1.2.2 release notes

Updated to work with iOS 12.4 and higher. In particular, this fixes the issue of always connecting to the device microphone when brought to the foreground after being launched from an IAA host such as Audiobus or AUM. Also, the layout is adapted for "notch" devices like iPhone X.

More Apps by Matthew Caldwell (2)

Muckraker is an abstract audio distortion effect to annihilate your sound. Add a gentle fuzz to your guitar or blast your synth harmonies into brutal white noise.

Price Free
Author Matthew Caldwell
Type Effect
Effect type Distortion, Drive etc.
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.82353 (17), current: 4.82353 (17)
Released 09/05/2015
Updated 02/06/2020

It would be nice if that echo box worked properly, instead of stretching and warping like this. Maybe you shouldn't have dropped it in the bathtub. We're not looking to place blame or anything, but, you know. Butterfingers.

Price Free
Author Matthew Caldwell
Type Effect
Effect type Reverb, Delay, Echo
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.70833 (24), current: 4.70833 (24)
Released 12/15/2015
Updated 02/07/2020