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Tonality

Simple and efficient audio synthesis in C++.

Prefer coding to patching? Love clean syntax? Care about performance? That's why Tonality was made.

// Tonality is a collection of signal generators and processors
TriangleWave tone1 = TriangleWave();
SineWave tone2 = SineWave();
SineWave vibrato = SineWave().freq(10);
SineWave tremelo = SineWave().freq(1);

// that you can combine using intuitive operators
Generator combinedSignal = (tone1 + tone2) * tremelo;
        
// and plug in to one another
float baseFreq = 200;
tone1.freq(baseFreq + vibrato * 10);
tone2.freq(baseFreq * 2 + vibrato * 20);

With Tonality you can create an awesome synthesizer with just a couple lines of code.

ControlXYSpeed speed = ControlXYSpeed().x(addParameter("x")).y(addParameter("y"));    
outputGen = RectWave().freq(100).pwm( 0.1 + (SineWave().freq(0.1) + 1) * 0.1) * SineWave().freq(1) >> LPF12().cutoff(100 + 600 * speed);

This code creates a rectangle wave oscillator, modulates the timbre of that oscillator by a sine wave, adds some slow tremelo, and sends it through a filter. On top of all that, it maps mouse speed to the cutoff frequency.

You can browse more synth examples here

Example Projects

Tonality comes with several example projects, found in the "examples" directory. I plan to add more demo projects for Windows and Linux in the future.

  • Several example synth patches in Demo Synths
  • Standalone example using RTAudio for building a non-interactive synth patch that runs from the command line
  • iOS example for making synths on your iPhone/iPad.