Six Sines is a compact software synthesizer built around audio-rate inter-modulation.
It uses a six-operator architecture that blends phase modulation and digital ring modulation techniques, with a flexible design that gives each part of the signal path its own modulation possibilities. The result is a synth aimed at sound designers who want deep control over evolving, metallic, glassy, and experimental tones.
This is free and open source software.
Key Features
- Six-operator synthesis engine with feedback and routing from each operator to subsequent operators.
- Supports both phase modulation and digital ring/audio-rate amplitude modulation within the synthesis matrix.
- Each modulation node has its own per-voice envelope and LFO for detailed sound shaping.
- Offers polyphonic and monophonic operation, along with a per-key piano-style retrigger mode.
- Includes settings for MPE, mono mode, pitch bend depth, and oversampling control.
- Provides screen reader support and accessibility features for navigating its large interface.
Website: github.com/baconpaul/six-sines
Support:
Developer: Paul
License: MIT License

Six Sines is written in C++. Learn C++ with our recommended free books and free tutorials.
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| Six Sines | Compact software synthesizer built around audio-rate inter-modulation |
Read our verdict in the software roundup.
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