AUBE ~ Sound Generation & Processing


AUBE is a system for sound generation and processing. You can process audio on the fly by setting up arbitrary configurations of sound generators, sequencers and effects modules, through which sound is played, filtered, and recorded.

www.metadecks.org/software/aube

Tyrell N6 ~ Cross-platform Software Synthesizer


TyrellN6 is a compact, sporty synth. Based on concepts and ideas for a hardware synth: a few modules, novel features, analogue sound and low-cost. TyrellN6 is the software version manifestation of these ideas.

  • Virtual analogue with classic architecture plus extras
  • 2 oscillators, noise, ring modulator
  • 2 LFOs with 8 waveforms, host-syncable
  • Audio source mixer with authentic overdrive and filter feedback
  • Twin filter related to Diva (early model)
  • Analogue-type ADSR envelopes, loopable or LFO-triggered
  • Skinnable UI
  • Over 580 factory presets

https://u-he.com/products/tyrelln6/

Twonker ~ Overtone Series MIDI VST


The Twonker is a free VST MIDI Plugin that allows a digital piano (or any MIDI instrument) to play tones from the Overtone Series. It is designed to run within most Digital Audio Workstations as a Synth Plugin on MacOS, Windows, and Linux.

The Twonker allows a musician to play overtones in a predictable and flexible manner, using a regular MIDI-based keyboard. In essence, it behaves like twelve different pianos tuned to twelve different “Overtone Scales”.

Features:

  • Runs on MacOS, Windows, and Linux
  • Built on the portable JUCE application framework
  • Functions as a Synth with MIDI input and output

www.jasonlocke.com/twonker

sourceforge.net/projects/twonker

AGS ~ Advanced Gtk+ Sequencer


Advanced GTK+ Sequencer is intended to use for music composition. It features a piano roll, as well a synth, matrix editor, drum machine, soundfont2 player, mixer and an output panel.

It’s designed to be highly configurable, you may add effects to its effect chain, add or remove audio channels/pads.

You may set up a fully functional network of engines, therefore exists a link editor for linking audio lines.

In conjunction with ags you need a realtime kernel and alsa support. `ags` uses conditional locks to keep several threads in sync that’s why you need at least a preemptible kernel.

Features:
  • save or open Advanced Gtk+ Sequencer XML files with XPath support
  • add or remove audio engines with adjustable audio channels and pads
  • link channels with property dialog
  • output panel, mixer, drum and matrix sequencer, soft synth and audio file player
  • piano roll with basic notation editing supporting copy & paste
  • adjustable BPM
  • LADSPA, DSSI and Lv2 support
  • export to WAV, FLAC, OGG and others
  • multiple sinks like Pulseaudio, JACK, ALSA and OSS
  • automation editor
  • waveform editor with copy & paste
  • capture sound with AgsAudiorec machine
  • MIDI instrument input
  • import/export to Standard MIDI Files
  • OSC content format support
  • OSC server for remote control and monitoring

nongnu.org/gsequencer/

sourceforge.net/projects/ags/

Ample Guitar M Lite ~ Martin D-41 Plugin


Ample Guitar M Lite aims to bring a Martin D-41 Acoustic Guitar sound to your studio.

www.amplesound.net/en/pro-pd.asp?id=7

Tomita ~ python-tomita Synthesizer


tomita is a command-line music and synthesizer package based on PySynth.

github.com/g4brielvs/python-tomita

PySynth ~ Python Synthesizers & Scripts


PySynth is a suite of simple music synthesizers and helper scripts written in Python 3. It is based on a synth script I found on the Web and then modified for my purposes. The goal is not to produce many different sounds, but to have scripts that can turn ABC notation or MIDI files into a WAV file without too much tinkering.

There are nine PySynth variants now: PySynth A, the oldest variant, only needs Python itself, and sounds somewhat like a cross between a flute and organ. PySynth B is more complex in sound and needs NumPy. It is supposed to be a little closer to a piano. No competition for Pianoteq of course, but a reasonable fit for keyboard music. PySynth E is similar, but an FM-synthesized e-piano so it sounds much brighter than B (slightly DX7 e-piano-like; I used the DX7 presets in hexter as a basis). PySynth S is more comparable to a guitar, banjo, or harpsichord, depending on note length and pitch. PySynth C, D, and P are subtractive synths, reminiscent of 1970s analog synthesizer voices.

The synthesizers are all monophonic, i.e. they can only play one note at a time. (Although successive notes can overlap in PySynth B and S, but not A.) However, two or more output files can be mixed together…

mdoege.github.io/PySynth/

github.com/g4brielvs/python-tomita

libraries.io/pypi/PySynth

en.wikipedia.org/wiki/PySynth

Roland TB-303 & TR-808 ~ Web Synths


Create music with both instruments for free online at 808303.studio A website from Roland, Yuri Suzuki and The London Design Museum.

Polymeter ~ Compose Polymeter Based Music


Polymeter is a MIDI sequencer for music that’s in multiple prime meters (1, 2, 3, 5, 7, 11, etc.) simultaneously. Each track has its own loop length, and when the lengths differ, the tracks “slip” (or shift phase) relative to each other. The resulting interference pattern is sufficiently intricate that variations similar to the embellishments of a live performer can be generated algorithmically.

Features:

  • Multitrack step sequencer for polymeter
  • Each track has its own loop length
  • Any number of tracks, of any length
  • Full clipboard support (copy/cut/paste)
  • Unlimited undo and redo for all edits
  • Multiple tracks can be edited at once
  • Optionally shows current position within each track
  • Drag reordering of tracks
  • Exports a MIDI file
  • Join adjacent steps to make tied notes
  • Velocity editing
  • Controller tracks
  • Recording of live arrangement
  • Editing of arrangement on timeline
  • Inter-track modulation of mute, note, velocity, duration, position, and more
  • Live performance view with full screen mode
  • Recursive modulation (modulation of modulation) for mute and position
  • Modulation graphing via Graphviz
  • MIDI mapping of all parameters with learn mode
  • Optionally transmits MIDI clock

KickMaker ~ Plugin Drum Synth


KickMaker is a synthesizer designed specifically to create good kick drum sounds. It uses four independent oscillators and a wide range of effects, allowing one to create perfectly customized beats.

Features:

  • Four independent oscillators
  • Each oscillator has its own ADSR curve
  • ADSR curve for mixed signal
KickMaker 1.x/2.x screenshot

AudioKit Synth One ~ Mac Open Source Synth


This synthesizer is completely free, fully functional, and ad-free. It’s the ultimate free iPad music instrument app.

  • Hybrid Analog/FM Poly Synth (6-voice)
  • Over 300+ Presets crafted by famous sound designers
  • Accessibility! Voice Over for the blind & visually impaired
  • Audiobus 3 & Inter-app Audio (IAA)
  • AUM, BeatMaker 3, Cubasis, GarageBand, etc compatible
  • Five Oscillators (2 DCO, FM, Sub, Noise)
  • 2 Assignable LFOs with dozens of routing possibilities
  • 100+ Alternative Scales & Tunings
  • Vintage-Style 16-Step Sequencer
  • Classic poly arpeggiator
  • Ableton Link
  • MIDI in (Control with a MIDI Keyboard or DAW)
  • Touchable ADSR Envelopes for Amp & Filter
  • FM Oscillator w/ Mod
  • Dedicated Sine/Square -12/24 Sub Osc
  • 4-Pole Vintage Low-Pass Filter
  • High-Pass/Band Pass Filters
  • Mono portamento & legato
  • Beautiful Sean Costello Reverb
  • Multi-tap (ping-pong) delay
  • TouchPads
  • Preset Import/Export & More…
  • MIDI Learn on all knobs
  • MIDI Bank (MSB)/Patch Change & Sustain Pedal support
  • Compact app size (under 50mb)

audiokit-synthone

audiokitpro.com/synth
github.com/AudioKit/AudioKitSynthOne

Mika Micro ~ Minimal Subtractive Synth


Mika Micro is a subtractive synthesizer plugin that aims to be fun and expressive with a minimal set of controls.

Features:

  • 2 oscillators with 6 waveforms and split knobs
  • Simple FM functionality
  • 12dB resonant low pass filter
  • 8 voice polyphony and mono/legato modes
mika micro

tesselode.itch.io/mika-micro
github.com/tesselode/mika-micro