amSynth is an analogue-modelling synthesizer inspired by the straightforward signal paths and hands-on controls of classic subtractive instruments. It deliberately avoids an overwhelming collection of modules, concentrating instead on familiar oscillators, filters, envelopes and modulation.
The instrument is well suited to learning synthesis fundamentals and creating leads, basses, pads and simple effects. Users can shape the source waveforms, filter their harmonic content and animate the sound with low-frequency modulation.
An accessible graphical interface and a substantial preset collection make it useful for both beginners and experienced musicians seeking a compact instrument.
This is free and open source software.
Key Features
- Two oscillators with sine, saw, pulse, noise and related waveforms.
- Hard oscillator synchronisation and detuning controls.
- Resonant low-pass, high-pass, band-pass and notch filter modes.
- Selectable filter slopes and dedicated filter envelope.
- Separate ADSR envelopes for amplitude and filter shaping.
- Low-frequency oscillator routable to pitch, filter and amplitude.
- Monophonic, polyphonic and legato keyboard modes.
- Distortion and stereo reverb effects.
- Preset banks with sound selection and saving in the instrument interface.
- Microtuning features for alternatives to standard equal temperament.
- Standalone application and instrument plugin operation.
- Cross-platform support – runs on Linux, macOS, and Windows.
Website: amsynth.github.io
Support:
Developer: Nick Dowell, Brian and contributors
License: GNU General Public License v2.0
amSynth is written in C++. Learn C++ with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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