Want to narrate videos in your own voice, or have AI read text in your favorite celebrity's tone? Meet CV Voice Cloning, a free, open-source tool powered by coqui.ai's XTTS v2 model. Supports 16 languages with just 5-20 seconds of voice samples. High-quality voice cloning and synthesis through a clean web interface—perfect for video creators, language learners, and audiobook producers.

🎤 Introduction

Have you ever wanted to narrate a video in your own voice, or have AI read text in the tone of your favorite celebrity? With CV Voice Cloning, built on coqui.ai's XTTS v2 model, all this is now within easy reach. This open-source tool supports 16 languages and requires only 5-20 seconds of voice samples to achieve high-quality voice cloning and synthesis. Whether you need text-to-speech or voice-to-voice conversion, the clean web interface makes the process effortless.

Note: This is the English translation of the original Chinese version.

🌟 Core Features at a Glance

Multi-Scenario Voice Cloning

  • Text-to-Speech: Type any text, choose a target voice, and generate natural, fluent speech—supporting 16 languages including Chinese, English, Japanese, Korean, French, German, Italian, and more.
  • Voice-to-Voice: Upload source audio and convert it to a target voice—preserves intonation while replacing speaker identity.
  • Real-Time Recording: Record samples directly through your microphone and instantly generate cloned voice.

Multilingual Support

The model is optimized for English, with strong support for Chinese (clear pronunciation recommended). Other language compatibility is as follows:

LanguageSupport LevelOptimization Tips
English (en)⭐⭐⭐⭐⭐No additional tuning required
Chinese (zh)⭐⭐⭐⭐Avoid long sentences, record in chunks
Japanese/Korean⭐⭐⭐Keep samples to 5-15 seconds
European languages⭐⭐⭐Avoid complex connected speech

💻 Two Deployment Methods Explained

Method 1: Pre-compiled Version (Recommended for Beginners)

Compatible System: Windows 10/11

Installation Steps:

  1. Download the main program (1.7 GB) and the voice model (3 GB) from GitHub Releases.
  2. Extract to a non-Chinese path (e.g., E:/clone-voice) and place the model files into the tts folder.
  3. Double-click app.exe to launch—the browser interface will open automatically.

Advantages: Zero setup required, environment pre-configured, TTS model integrated out of the box.

Method 2: Source Code Deployment (For Developers)

Requirements:

  • Python 3.9-3.11 + Git
  • Proxy settings required: add HTTP_PROXY=http://127.0.0.1:7890 to the .env file

Key Steps:

git clone [email protected]:jianchang512/clone-voice.git
cd clone-voice
python -m venv venv
# Windows
venv\Scriptsctivate
pip install -r requirements.txt --no-deps
# For GPU users
pip uninstall -y torch
pip install torch torchaudio --index-url https://download.pytorch.org/whl/cu121

Common Issue: If model download fails, manually modify the aiohttp library's proxy configuration.

🛠️ Hands-On Usage Guide

Text-to-Speech Mode

  1. Enter or import text (TXT/SRT subtitle files supported)
  2. Choose a preset voice or upload a custom voice sample
  3. Click "Generate Now" and wait for output

Voice Conversion Mode

  1. Upload the audio to convert (MP3/WAV/FLAC)

  2. Record or select a target voice (critical requirements for samples):

    • Duration: 5-20 seconds
    • Standard Mandarin, no background noise
    • Avoid breathy or slurred pronunciation

Parameter Tuning Tips

Boost quality with advanced parameters:

# Key parameters from the example code
emotion='happy'        # Set emotion: neutral/happy/sad...
speed=1.2              # Speed adjustment (1.0 is baseline)
language="zh"          # Explicitly specify Chinese synthesis
split_sentences=True   # Auto-split sentences for naturalness

⚡ Performance Optimization & Troubleshooting

GPU Acceleration

For NVIDIA GPUs:

  1. Install CUDA 11.8+ and the matching cuDNN 6
  2. Run nvidia-smi to verify driver compatibility
  3. The tool auto-detects and enables CUDA acceleration—3-5x speedup

Common Issues

ErrorSolution
"Voice-to-voice thread startup failed"Check the tts folder structure or download extra-to-tts_cache.zip to fix
"Text length exceeds limit"Split long sentences into shorter ones (avoid exceeding 182 characters)
Unnatural Chinese synthesisEnable split_sentences=True and add periods as separators
CUDA out-of-memory errorEnable "Force CPU usage" option in settings

🎯 Use Case Recommendations

  • Video Creation: Clone your own voice for multi-character narration, or mimic specific character voices
  • Language Learning: Generate standard pronunciation samples for shadow-speaking practice
  • Audiobook Production: Convert e-books into celebrity-voice-narrated versions
  • Game Development: Quickly generate NPC dialogue voiceovers, slashing production costs

⚠️ Ethics & Legal Notice

Per the Coqui Public Model License 1.0.0, this tool is strictly prohibited for commercial use and unauthorized cloning of real people's voices. Full license terms are available at coqui.ai/cpml.txt.

Use this technology responsibly—respect the privacy and rights of others.