AudioKit – An Open-Source Platform For Audio Synthesis, Processing, And Analysis

audiokit-synthesizers-fxAudioKit is a new open source platform for audio synthesis, processing and analysis on iOS and OS X.

It’s evolved from the Csound computer language for audio. As CDM’s Peter Kirn notes, “what AudioKit is in effect is Csound as an audio engine, with Objective-C and Swift as the API.”


  • 100+ Synthesizers and FX – Physical Models, Spectral Effects, Granular Synthesis, Effects Processing, Filters, Reverbs, and more.
  • Built-in Sampler – Record audio streams, including from the microphone, into tracks you can name, recall, and process on-the-fly.
  • Powerful Sequencing – Sequences are not limited to the usual notes-on-a-score, but can contain blocks of any code that can be triggered at any time.
  • Full-featured Examples – The list of examples is growing, but already contains projects demonstrating audio techniques such as FM Synthesis, Granular Synthesis, Convolution, Effects Processing, and Pitch-Shifting, and more.
  • Simple, Human-readable Code – Coding with audio with audio metaphors – Conductors control Orchestras, which contain Instruments that produce Notes. Clear methods with Apple-style naming conventions, Xcode completion, documentation and tool-tips.
  • Write your audio-code along side your app logic – The same code that controls your data and user interface controls your sound in Objective-C or Swift.

Here’s a video intro:

Details on AudioKit are available at the project site.

If any readers are using AudioKit, let us know how you are using it and what you think of it!

via CDM’s Peter Kirn

9 thoughts on “AudioKit – An Open-Source Platform For Audio Synthesis, Processing, And Analysis

  1. Why can I not find what license it uses? “Open Source” is a vague marketing term not a legal term. This looks super awesome though!

      1. Ok, so for the question everybody really wants to know: is LGPL compatible with the Apple app store? This isn’t the thing you just want to assume without being certain. Moreover, this is the kind of thing that would be awesome to have plainly stated on the website. The fact that it’s not makes me nervous; almost like you want people to get hooked using it and then later “oh, sorry LGPL can’t be used on the app store, but if you pay us we’ll license it proprietarily to you for commercial use”. Not saying that’s the case but any time the FSF is involved you can be sure the code is anything but “free”.

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