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title: AudioBook Forge
emoji: 🎧
colorFrom: indigo
colorTo: blue
sdk: gradio
sdk_version: 6.13.0
python_version: '3.12'
app_file: app.py
pinned: false
license: apache-2.0
short_description: AI audiobook generator with character voices via Qwen3-TTS
---
# AudioBook Forge
**Model-agnostic, high-fidelity audiobook generator** powered by [Qwen3-TTS](https://github.com/QwenLM/Qwen3-TTS). Create audiobooks where every character speaks with their own unique voice.
## Features
- 📁 **File Upload** — Import EPUB, PDF, TXT, or HTML directly
- 📖 **Chapter Detection** — Auto-detects chapters/sections for selective generation
- 🎙️ **Character Voice Mapping** — Auto-extract characters and assign unique voices
- 🎭 **Three Voice Modes for Every Voice**
- **Preset** — 9 premium built-in speakers (English, Chinese, Japanese, Korean, dialects)
- **Clone** — Upload a 3–10 second voice sample to clone any real voice
- **Design** — Describe a voice in text (e.g., "a raspy old man with a warm chuckle") and the AI creates it
- ⚡ **Quick Generate** — One-click audiobook from the Story tab with full voice customization (preset, clone, or design)
- 🎚️ **Speed & Temperature Control** — Adjust playback speed per voice (0.5x–2.0x) and generation temperature
- 📦 **Multi-format Export** — MP3, WAV, or ZIP of individual segments
- 💾 **Save/Load Projects** — Export and restore your voice configurations
- 🌐 **10 Languages** — English, Chinese, Japanese, Korean, German, French, Spanish, Italian, Portuguese, Russian
- ⚡ **ZeroGPU** — Runs on Hugging Face ZeroGPU (free A100/H200 compute)
- 🔧 **Model Agnostic** — Backend is swappable; upgrade to future SOTA TTS models without changing the UI
## How to Use
1. **Paste or upload** your story in the 📖 Story tab.
2. **Quick Generate** (optional) — Generate a full audiobook immediately with a customized narrator voice.
3. **Extract characters** with the 🔍 button (AI enhancement is on by default for richer voice descriptions).
4. **Configure voices** in the 🎭 Voice Cast tab:
- Set the **Narrator** voice (preset, cloned, or AI-designed)
- Assign a voice to each **Character** (all default to AI-designed voices)
5. **Generate** in the ⚡ Generate tab and download your MP3, WAV, or ZIP audiobook.
6. **Save your project** in the 💾 Project tab to preserve voice configs for later.
## Architecture
- `app.py` — Gradio frontend with dark-themed custom UI
- `backend.py` — Model-agnostic TTS engine, dialogue parser, and audio stitcher
- **TTS Backend:** Qwen3-TTS 1.7B (CustomVoice + Base + VoiceDesign)
- **Text Processing:** Paragraph-aware chunking, sentence-boundary splitting, quote detection
- **Audio Pipeline:** Per-segment synthesis → crossfade stitching → peak normalization → MP3 export
## License
The application code is Apache 2.0. The underlying Qwen3-TTS models are also Apache 2.0, making this stack fully commercially usable.
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