aula

Audio Language

This is my attempt of creating an audio programming language from scratch, using only the C standard lib and SDL2.

The interpreter is currently working in the sense that we can pass it an aula source file and it will play the notes listed in the file.
However, pretty much everything else is missing atm. There is no language documentation yet, no examples, and error reporting is as rudimentary as it gets.
Features are also extremely limited for now. We can currently play all (half) notes from C4 to B4. And the sound is not particularly interesting we're merely emitting a simple sine wave.

Build

Install dependencies

On Debian-based Linux distros:

sudo apt install libsdl2-dev

Compile

make

Test

make check

When testing locally, running multiple tests in parallel via the -j option is not recommended as their sound will overlap.

Usage

To play a file, start the interpreter and give the filename as an argument:

./bin/aula examples/canon-in-d.aula

An aula file could currently look for example like this:

|| D A B F# | G D G A ||

(See more examples in the examples folder.)