VoiceStudio

_{Previously OmniVoice-Studio}

Local voice cloning, dubbing, dictation, and long-form audio.

16 TTS engines · 11 ASR engines · 646-language catalogue · macOS, Windows, and Linux

Local-first. No account, API key, subscription, or usage meter for the core workflow.

<a href="#install">Install</a> ·
<a href="#features">Features</a> ·
<a href="#comparison">Compare</a> ·
<a href="#requirements">Requirements</a> ·
<a href="#engines">Engines</a> ·
<a href="#architecture">Architecture</a> ·
<a href="#api">API</a> ·
<a href="#documentation">Docs</a> ·
<a href="https://github.com/debpalash/VoiceStudio/raw/v0.5.1/README_CN.md"><strong>简体中文</strong></a>







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[!WARNING] Active beta. Use the latest release for stable work or main for current fixes. Report problems through GitHub Issues.

At a glance

Install

Download packages from the latest release. First launch creates a managed Python environment and downloads the default model. Later launches reuse both.

[!NOTE] On macOS, first launch needs a one-time right-click → Open approval. Intel Macs cannot run the local Python backend; use a remote backend instead.

First voice

1. Launch VoiceStudio and open Voice Cloning.
2. Add a clean voice sample. Three seconds works; 5–15 seconds usually gives a better prompt.
3. Enter text, choose a language, then select Generate.

Run from source

Install the development prerequisites, then:

git clone https://github.com/debpalash/VoiceStudio.git
cd VoiceStudio
bun install
bun run desktop

Use bun run dev for the browser UI. See Contributing for services, tests, and platform packages.

If setup fails

• Run Settings → About → Run self-check or uv run python backend/main.py --diagnose --deep.
• Check install troubleshooting.
• Save a scrubbed diagnostic bundle from the app when opening an issue.
• For slow generation, compare measured benchmarks and performance settings.

Features

Model Catalogue: engine, device, and install state	Gallery: save a shared voice as a local profile

Comparison

VoiceStudio trades managed cloud compute for local control. This is the practical difference:

Requirements

Requirements vary by engine. These values cover the default local workflow.

ROCm is Linux-only and opt-in. Windows AMD/Ryzen AI uses CPU. Systems with limited VRAM offload work to CPU when required. See performance, benchmarks, and engine disk usage.

Engines

Engine support is capability-specific. Check cloning, language, platform, memory, and license before choosing one. Full setup guides: docs/engines.

Text to speech

⚡ Installed or registered on demand.

¹ IndexTTS 2.5 requires a separate written Bilibili license above 100 million monthly active users or RMB 1 billion annual revenue. Review the model license.

² PocketTTS shows its gated-access and CC-BY-4.0 terms before first use.

Clone-less engines cannot preserve a reference speaker in dubbing or pinned-voice batch jobs. VoiceStudio rejects those jobs instead of silently changing engines. Heavy engines have separate memory and platform limits; check their engine guide first.

Speech to text

WhisperX and Faster-Whisper retry with int8 when efficient float16 is unavailable. Pin ASR_COMPUTE_TYPE=int8 or float32 only if automatic selection still fails.

Architecture

Tauri v2 desktop shell (Rust)
        │ IPC
React + Vite UI
        │ HTTP · SSE · WebSocket on localhost:3900
FastAPI backend
        ├── TTS / ASR engine registries
        ├── dubbing / audio / long-form pipelines
        ├── OpenAI-compatible API and MCP server
        └── SQLite + Alembic → omnivoice_data/

Network boundary

• The desktop talks to a loopback-only backend on localhost:3900.
• Loopback API calls need no server key. Remote access requires a share PIN or API key.
• Remote workers and OpenAI-compatible ASR are opt-in. The UI identifies when audio leaves the machine.
• Analytics is off until consent. If enabled, it sends allowlisted, content-free usage metadata—not t