ESP32 synth: all-in-one acid combo of two TB303's, a drum machine with fx chain, cd-quality

singing voice synthesizer with 3-part harmony and automatic voice leading

A singing vocal synthesizer

A many speaker distributed music synthesizer using UDP multicast over WiFi

The Tulip Creative Computer - a portable Python synthesizer for music and graphics

AMY - A high-performance fixed-point Music synthesizer librarY for microcontrollers

A simple music making program

A software synthesizer library for Godot (GDExtension).

A beginner-friendly music making app.

Free, studio-quality reverb SOURCE CODE in the public domain

A simple music audio synthesis engine

Audio Integration Library

Music exploration app

A small MIDI visualizer tool, using OpenGL

A Powerful DSP Library in C++

Examples for the Daisy Platform

Orac : virtual modular synth

A modern C++ MIDI 1 / MIDI 2 real-time & file I/O library. Supports Windows, macOS, Linux and WebMIDI.

sound synthesis library for Arduino

Open Cubic Player (unix fork). Music visualizer for various tracked music formats (amiga modules, S3M, IT), chiptunes and other formats related to demoscene

C wrapper for VST3, AUv2, CLAP audio plugin formats

A single file, public domain C implementation of a traditional vocoder.

A high level and feature rich audio library written in C++ with language bindings.

🎤 The easiest way to transcribe audio in Swift

Typeface for rendering waveform/data

an NES like (sort of) synth based on the arduino or attiny4313

A command-line VST plugin host

Simple guitar tuner sample app with BSD license

eSpeak NG is an open source speech synthesizer that supports more than hundred languages and accents.

tools to deal with linear-timecode (LTC)