DSL for low-level audio programming.
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Omni is a cross-platform DSL (Domain Specific Language) for low level audio programming. It aims to be a new, expressive and easy to use programming language to code audio algorithms in.

Omni leverages nim and C to compile code to self-contained static or shared libraries that can then be loaded and used anywhere. So far, two wrappers have already been written to compile omni code to SuperCollider UGens (omnicollider), or Max 8 objects (omnimax).

Also, a basic syntax highlighting VSCode plugin is available by simply looking for omni in the Extensions Marketplace.


  1. nim
  2. git


Refer to your distribution's package manager and make sure you've got nim and git installed.


To install dependencies on MacOS it is suggested to use a package manager like brew.

After brew has been installed, run the following command in the Terminal app to install nim:

brew install nim

Then, make sure that the ~/.nimble/bin directory is set in your shell $PATH. If using bash (the default shell in MacOS), you can simply run this command:

echo 'export PATH=$PATH:~/.nimble/bin' >> ~/.bash_profile


To install dependencies on Windows it is suggested to use a package manager like chocolatey.

After chocolatey has been installed, open PowerShell as administrator and run this command to install nim and git:

choco install nim git -y


To install omni, simply use the nimble package manager (it comes bundled with the nim installation):

nimble install omni -y


Once you've installed omni, the omni executable will be placed in your ~/.nimble/bin folder.

Run omni -h to get help on all the available flags.

When running the omni compiler, the output is either a static or shared library (depending on the --lib flag). Along with it, an omni.h file (depending on the --exportHeader flag) containing all the callable functions in the shared/static library will be exported.

omni ~/.nimble/pkgs/omni-0.4.1/examples/OmniSaw.omni -o:./

This command will compile an antialiased sawtooth oscillator (part of the examples) to a shared library (, together with a header file (omni.h), in the current folder.

Sine oscillator example


ins:  1
outs: 1

    phase = 0.0

    incr  = in1 / samplerate
    out1  = sin(phase * TWOPI)
    phase = (phase + incr) % 1.0

To compile it, simply run:

omni Sine.omni

Website / Docs

Check omni's website.

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