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<p align="center">
<img src=".github/assets/icon-dark.webp" alt="Voicebox" width="120" height="120" />
</p>
<h1 align="center">Voicebox</h1>
<p align="center">
<strong>The open-source voice synthesis studio.</strong><br/>
Clone voices. Generate speech. Apply effects. Build voice-powered apps.<br/>
All running locally on your machine.
</p>
<p align="center">
<a href="https://github.com/jamiepine/voicebox/releases">
<img src="https://img.shields.io/github/downloads/jamiepine/voicebox/total?style=flat&color=blue" alt="Downloads" />
</a>
<a href="https://github.com/jamiepine/voicebox/releases/latest">
<img src="https://img.shields.io/github/v/release/jamiepine/voicebox?style=flat" alt="Release" />
</a>
<a href="https://github.com/jamiepine/voicebox/stargazers">
<img src="https://img.shields.io/github/stars/jamiepine/voicebox?style=flat" alt="Stars" />
</a>
<a href="https://github.com/jamiepine/voicebox/blob/main/LICENSE">
<img src="https://img.shields.io/github/license/jamiepine/voicebox?style=flat" alt="License" />
</a>
<a href="https://deepwiki.com/jamiepine/voicebox">
<img src="https://img.shields.io/static/v1?label=Ask&message=DeepWiki&color=5B6EF7" alt="Ask DeepWiki" />
</a>
</p>
<p align="center">
<a href="https://voicebox.sh">voicebox.sh</a> •
<a href="https://docs.voicebox.sh">Docs</a> •
<a href="#download">Download</a> •
<a href="#features">Features</a> •
<a href="#api">API</a> •
<a href="docs/content/docs/overview/troubleshooting.mdx">Troubleshooting</a>
</p>
<br/>
<p align="center">
<a href="https://voicebox.sh">
<img src="landing/public/assets/app-screenshot-1.webp" alt="Voicebox App Screenshot" width="800" />
</a>
</p>
<p align="center">
<em>Click the image above to watch the demo video on <a href="https://voicebox.sh">voicebox.sh</a></em>
</p>
<br/>
<p align="center">
<img src="landing/public/assets/app-screenshot-2.webp" alt="Voicebox Screenshot 2" width="800" />
</p>
<p align="center">
<img src="landing/public/assets/app-screenshot-3.webp" alt="Voicebox Screenshot 3" width="800" />
</p>
<br/>
## What is Voicebox?
Voicebox is a **local-first voice cloning studio** — a free and open-source alternative to ElevenLabs. Clone voices from a few seconds of audio or pick from 50+ preset voices, generate speech in 23 languages across 7 TTS engines, apply post-processing effects, and compose multi-voice projects with a timeline editor.
- **Complete privacy** — models and voice data stay on your machine
- **7 TTS engines** — Qwen3-TTS, Qwen CustomVoice, LuxTTS, Chatterbox Multilingual, Chatterbox Turbo, HumeAI TADA, and Kokoro
- **Cloning and preset voices** — zero-shot cloning from a reference sample, or curated preset voices via Kokoro (50 voices) and Qwen CustomVoice (9 voices)
- **23 languages** — from English to Arabic, Japanese, Hindi, Swahili, and more
- **Post-processing effects** — pitch shift, reverb, delay, chorus, compression, and filters
- **Expressive speech** — paralinguistic tags like `[laugh]`, `[sigh]`, `[gasp]` via Chatterbox Turbo; natural-language delivery control via Qwen CustomVoice
- **Unlimited length** — auto-chunking with crossfade for scripts, articles, and chapters
- **Stories editor** — multi-track timeline for conversations, podcasts, and narratives
- **API-first** — REST API for integrating voice synthesis into your own projects
- **Native performance** — built with Tauri (Rust), not Electron
- **Runs everywhere** — macOS (MLX/Metal), Windows (CUDA), Linux, AMD ROCm, Intel Arc, Docker
---
## Download
| Platform | Download |
| --------------------- | ------------------------------------------------------ |
| macOS (Apple Silicon) | [Download DMG](https://voicebox.sh/download/mac-arm) |
| macOS (Intel) | [Download DMG](https://voicebox.sh/download/mac-intel) |
| Windows | [Download MSI](https://voicebox.sh/download/windows) |
| Docker | `docker compose up` |
> **[View all binaries →](https://github.com/jamiepine/voicebox/releases/latest)**
> **Linux** — Pre-built binaries are not yet available. See [voicebox.sh/linux-install](https://voicebox.sh/linux-install) for build-from-source instructions.
> **Having trouble?** See the [Troubleshooting Guide](docs/content/docs/overview/troubleshooting.mdx) for common install, generation, model-download, and GPU issues.
---
## Features
### Multi-Engine Voice Cloning
Seven TTS engines with different strengths, switchable per-generation:
| Engine | Languages | Strengths |
| --------------------------- | --------- | ---------------------------------------------------------------------------------------------------------------------------------------- |
| **Qwen3-TTS** (0.6B / 1.7B) | 10 | High-quality multilingual cloning, delivery instructions ("speak slowly", "whisper") |
| **Qwen CustomVoice** | 10 | 9 curated preset voices with natural-language delivery control — no reference audio required |
| **LuxTTS** | English | Lightweight (~1GB VRAM), 48kHz output, 150x realtime on CPU |
| **Chatterbox Multilingual** | 23 | Broadest language coverage — Arabic, Danish, Finnish, Greek, Hebrew, Hindi, Malay, Norwegian, Polish, Swahili, Swedish, Turkish and more |
| **Chatterbox Turbo** | English | Fast 350M model with paralinguistic emotion/sound tags |
| **TADA** (1B / 3B) | 10 | HumeAI speech-language model — 700s+ coherent audio, text-acoustic dual alignment |
| **Kokoro** | 8 | 50 curated preset voices, tiny 82M model, fast CPU inference |
### Emotions & Paralinguistic Tags
Only **Chatterbox Turbo** interprets paralinguistic tags like `[laugh]` and
`[sigh]`. Qwen3-TTS, LuxTTS, Chatterbox Multilingual, and HumeAI TADA read them
literally as text.
With **Chatterbox Turbo** selected, type `/` in the text input to open the tag
inserter and add expressive tags inline with speech:
`[laugh]` `[chuckle]` `[gasp]` `[cough]` `[sigh]` `[groan]` `[sniff]` `[shush]` `[clear throat]`
### Post-Processing Effects
8 audio effects powered by Spotify's `pedalboard` library. Apply after generation, preview in real time, build reusable presets.
| Effect | Description |
| ---------------- | --------------------------------------------- |
| Pitch Shift | Up or down by up to 12 semitones |
| Reverb | Configurable room size, damping, wet/dry mix |
| Delay | Echo with adjustable time, feedback, and mix |
| Chorus / Flanger | Modulated delay for metallic or lush textures |
| Compressor | Dynamic range compression |
| Gain | Volume adjustment (-40 to +40 dB) |
| High-Pass Filter | Remove low frequencies |
| Low-Pass Filter | Remove high frequencies |
Ships with 4 built-in presets (Robotic, Radio, Echo Chamber, Deep Voice) and supports custom presets. Effects can be assigned per-profile as defaults.
### Unlimited Generation Length
Text is automatically split at sentence boundaries and each chunk is generated independently, then crossfaded together. Works with all engines.
- Configurable auto-chunking limit (100–5,000 chars)
- Crossfade slider (0–200ms) for smooth transitions
- Max text length: 50,000 characters
- Smart splitting respects abbreviations, CJK punctuation, and `[tags]`
### Generation Versions
Every generation supports multiple versions with provenance tracking:
- **Original** — clean TTS output, always preserved
- **Effects versions** — apply different effects chains from any source version
- **Takes** — regenerate with a new seed for variation
- **Source tracking** — each version records its lineage
- **Favorites** — star generations for quick access
### Async Generation Queue
Generation is non-blocking. Submit and immediately start typing the next one.
- Serial execution queue prevents GPU contention
- Real-time SSE status streaming
- Failed generations can be retried
- Stale generations from crashes auto-recover on startup
### Voice Profile Management
- Create profiles from audio files or record directly in-app
- Import/export profiles to share or back up
- Multi-sample support for higher quality cloning
- Per-profile default effects chains
- Organize with descriptions and language tags
### Stories Editor
Multi-voice timeline editor for conversations, podcasts, and narratives.
- Multi-track composition with drag-and-drop
- Inline audio trimming and splitting
- Auto-playback with synchronized playhead
- Version pinning per track clip
### Recording & Transcription
- In-app recording with waveform visualization
- System audio capture (macOS and Windows)
- Automatic transcription powered by Whisper (including Whisper Turbo)
- Export recordings in multiple formats
### Model Management
- Per-model unload to free GPU memory without deleting downloads
- Custom models directory via `VOICEBOX_MODELS_DIR`
- Model folder migration with progress tracking
- Download cancel/clear UI
### GPU Support
| Platform | Backend | Notes |
| ------------------------ | -------------- | ---------------------------------------------- |
| macOS (Apple Silicon) | MLX (Metal) | 4-5x faster via Neural Engine |
| Windows / Linux (NVIDIA) | PyTorch (CUDA) | Auto-downloads CUDA binary from within the app |
| Linux (AMD) | PyTorch (ROCm) | Auto-configures HSA_OVERRIDE_GFX_VERSION |
| Windows (any GPU) | DirectML | Universal Windows GPU support |
| Intel Arc | IPEX/XPU | Intel discrete GPU acceleration |
| Any | CPU | Works everywhere, just slower |
---
## API
Voicebox exposes a full REST API for integrating voice synthesis into your own apps.
```bash
# Generate speech
curl -X POST http://localhost:17493/generate \
-H "Content-Type: application/json" \
-d '{"text": "Hello world", "profile_id": "abc123", "language": "en"}'
# List voice profiles
curl http://localhost:17493/profiles
# Create a profile
curl -X POST http://localhost:17493/profiles \
-H "Content-Type: application/json" \
-d '{"name": "My Voice", "language": "en"}'
```
**Use cases:** game dialogue, podcast production, accessibility tools, voice assistants, content automation.
Full API documentation available at `http://localhost:17493/docs`.
---
## Tech Stack
| Layer | Technology |
| ------------- | ------------------------------------------------- |
| Desktop App | Tauri (Rust) |
| Frontend | React, TypeScript, Tailwind CSS |
| State | Zustand, React Query |
| Backend | FastAPI (Python) |
| TTS Engines | Qwen3-TTS, Qwen CustomVoice, LuxTTS, Chatterbox, Chatterbox Turbo, TADA, Kokoro |
| Effects | Pedalboard (Spotify) |
| Transcription | Whisper / Whisper Turbo (PyTorch or MLX) |
| Inference | MLX (Apple Silicon) / PyTorch (CUDA/ROCm/XPU/CPU) |
| Database | SQLite |
| Audio | WaveSurfer.js, librosa |
---
## Roadmap
| Feature | Description |
| ----------------------- | ---------------------------------------------- |
| **Real-time Streaming** | Stream audio as it generates, word by word |
| **Voice Design** | Create new voices from text descriptions |
| **More Models** | XTTS, Bark, and other open-source voice models |
| **Plugin Architecture** | Extend with custom models and effects |
| **Mobile Companion** | Control Voicebox from your phone |
For the **full engineering status, open-issue triage, and prioritized work queue**, see [`docs/PROJECT_STATUS.md`](docs/PROJECT_STATUS.md) — a living document that tracks what's shipped, what's in-flight, candidate TTS engines under evaluation, and why we've accepted or backlogged specific integrations.
---
## Development
See [CONTRIBUTING.md](CONTRIBUTING.md) for detailed setup and contribution guidelines.
### Quick Start
```bash
git clone https://github.com/jamiepine/voicebox.git
cd voicebox
just setup # creates Python venv, installs all deps
just dev # starts backend + desktop app
```
Install [just](https://github.com/casey/just): `brew install just` or `cargo install just`. Run `just --list` to see all commands.
**Prerequisites:** [Bun](https://bun.sh), [Rust](https://rustup.rs), [Python 3.11+](https://python.org), [Tauri Prerequisites](https://v2.tauri.app/start/prerequisites/), and [Xcode](https://developer.apple.com/xcode/) on macOS.
### Building Locally
```bash
just build # Build CPU server binary + Tauri app
just build-local # (Windows) Build CPU + CUDA server binaries + Tauri app
```
### Adding New Voice Models
The multi-engine architecture makes adding new TTS engines straightforward. A [step-by-step guide](docs/content/docs/developer/tts-engines.mdx) covers the full process: dependency research, backend protocol implementation, frontend wiring, and PyInstaller bundling.
The guide is optimized for AI coding agents. An [agent skill](.agents/skills/add-tts-engine/SKILL.md) can pick up a model name and handle the entire integration autonomously — you just test the build locally.
### Project Structure
```
voicebox/
├── app/ # Shared React frontend
├── tauri/ # Desktop app (Tauri + Rust)
├── web/ # Web deployment
├── backend/ # Python FastAPI server
├── landing/ # Marketing website
└── scripts/ # Build & release scripts
```
---
## Contributing
Contributions welcome! See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
1. Fork the repo
2. Create a feature branch
3. Make your changes
4. Submit a PR
## Security
Found a security vulnerability? Please report it responsibly. See [SECURITY.md](SECURITY.md) for details.
---
## License
MIT License — see [LICENSE](LICENSE) for details.
---
<p align="center">
<a href="https://voicebox.sh">voicebox.sh</a>
</p>