YosysHQ / yosys

Yosys Open SYnthesis Suite

sonic-pi-net / sonic-pi

Code. Music. Live.

nyosegawa / speech.cpp

Speech synthesis, speech recognition and voice activity detection for voice conversation, in C++ on ggml: Qwen3-TTS, Irodori-TTS, Qwen3-ASR, ReazonSpeech, parakeet and Silero VAD on Metal, Vulkan and the CPU, with an OpenAI-compatible server and live transcription.

gexgd0419 / NaturalVoiceSAPIAdapter

Make Azure natural TTS voices accessible to any SAPI 5-compatible application.

grame-cncm / faust

Functional programming language for signal processing and sound synthesis

MTG / essentia

C++ library for audio and music analysis, description and synthesis, including Python bindings

google / xls

XLS: Accelerated HW Synthesis

supercollider / supercollider

An audio server, programming language, and IDE for sound synthesis and algorithmic composition.

mkiol / dsnote

Speech Note Linux app. Note taking, reading and translating with offline Speech to Text, Text to Speech and Machine translation.

RHVoice / RHVoice

a free and open source speech synthesizer for Russian and other languages

benjamindehli / overtonium

32-partial additive synthesizer laid out like a 32-channel mixer. Every channel is one sine oscillator locked to a harmonic of the played note, and every channel has its own tuning, envelope and modulation.

heavylight-industries / capicola

Real-time time stretcher, pitch shifter, envelope follower, and transient detector firmware for the Hermetic Modular Alchemy Lab. AGPL-3.0.

HoppouAI / Breeze-TTS-2.cpp

Bilingual English and Mandarin text to speech in C++ and GGUF. Voice design, cloning, direction and experimental voice conversion. Vulkan backend, streaming HTTP and WebSocket server, web UI and a C API.

google-deepmind / mujoco_mpc

Real-time behaviour synthesis with MuJoCo, using Predictive Control

verilog-to-routing / vtr-verilog-to-routing

Verilog to Routing -- Open Source CAD Flow for FPGA Research

jameshball / osci-render

〰📺🔊 Synthesiser audio plugin for making music by drawing objects on an oscilloscope using audio.

supercollider / sc3-plugins

Community plugins for SuperCollider

JonET / monksynth

A monophonic vocal synthesizer using FOF synthesis, inspired by Delay Lama

OnjLouis / syxg100-hybrid

Modern Windows VST2 preservation wrapper for Yamaha S-YXG100 VL/PVL and SG synthesis

munt / munt

A multi-platform software synthesiser emulating pre-GM MIDI devices such as the Roland MT-32, CM-32L, CM-64 and LAPC-I. In no way endorsed by or affiliated with Roland Corp.

mmorise / World

A high-quality speech analysis, manipulation and synthesis system

amsynth / amsynth

Simple software synthesizer for Linux

LancePutnam / Gamma

Generic (Sound) Synthesis Library