QMidiArp is a MIDI arpeggiator, phrase generator and controller LFO for ALSA and JACK. It can run multiple synchronized arpeggiators, LFOs and step sequencers. The modules are also available as LV2 plugins with Qt user interface. QMidiArp has been growing since June 2009 on top of Matthias Nagorni’s original arp idea.
Features:
Programmable arpeggio patterns, LFO waveforms and sequences
Modular setup of arpeggiators, MIDI LFOs and step sequencers
MIDI-controllable (MIDI-Learn)
Synchronization with MIDI Clock or JACK Transport possible
Optional triggering by keyboard or continuous play mode for all modules
Patterns can be stored and switched by MIDI control while running
/synth is a minimalist, array-oriented synthesis environment. Heavily inspired by the K/Simple lineage and the work of Arthur Whitney, it treats sound not as a stream, but as a holistic mathematical vector.
📐 The Philosophy
This isn’t a DAW; it’s a vector-processing engine designed for “Base Camp” signal processing.
It uses:
One-Letter Variables: A-Z globals only.
Right-Associativity: Expressions evaluate from right to left.
Vectorized Verbs: Math applied to entire buffers at once.
Sound is a vector. A kick drum is a vector. A two-second bell tone is a vector. You do math on vectors and the result is audio. There are no tracks, no timelines, no patch cables — only expressions.
A collection of graphical midi based editors, each made specifically for the BOSS SY-1000 , Roland VG-99 guitar, or VB-99 bass synth units, which provide an alternative to the Boss or Roland version of midi editors, with full features and control of the SY-1000, VG-99, or VB-99 from a Windows, Mac, or Linux computer.
Features:
Midi editing of parameters on-line or off-line, text list generation of settings, file load/save/backup/restore, ease of use with graphical interface.
A different version specific for each device.
SY-1000FloorBoard version also has features to convert patches from VG-99,VB-99, GP-10, GT-1000 units.
This library can read SF2 SoundFont files and render audio samples from them in real-time. It properly reads in a compliant SF2 file and can be used to obtain meta data such as preset names. It also has an audio rendering engine that can generate audio samples for key events that come from (say) a MIDI keyboard. This library is currently being used by my SoundFonts and SoundFontsPlus applications for SF2 file parsing and, in the latter app, as the sample generating engine.
Although most of the library code is generic C++17/23, there are a few bits that expect an Apple platform that has the AudioToolbox and Accelerate frameworks available. The goal is to be a simple library for reading SF2 files as well as a competent SF2 audio renderer whose output can be fed to any sort of audio processing chain, but it would probably take some effort to remove it from the Apple ecosystem.
A fully free and self-contained modular synthesizer based on the popular VCV Rack. Available in AudioUnit/CLAP/LV2/VST2/VST3 plugin formats and as a standalone app for FreeBSD, Linux, macOS, Windows and the Web.
A web-synthesizer that generates sound from the binary code of any files. It can synthesize sound directly in the browser, or be a generator of MIDI messages to external devices or DAWs, turning any file into a score. All the application code is written in Javascript and along with everything you need is packed into a single .html file of about 750kb. The synthesizer doesn’t need internet, it can be downloaded and run locally on any device with a browser.
The application reads the file sequentially, and due to the high speed of reading and random deviation of reading duration, we can get quite unpredictable generation of timbre nuances, and at certain settings we can switch to granular synthesis.
The Audio File