IndexTTS 2

Advanced Text-to-Speech with Superior Pronunciation and Natural Voice Quality

PlaygroundGitHub

Gallery of IndexTTS 2 Voice Samples

Listen to the natural voice synthesis achieved with IndexTTS 2

What is IndexTTS 2?

Next-Generation Text-to-Speech with GPT-Style Architecture

IndexTTS 2 represents a breakthrough in text-to-speech technology. Built on XTTS and Tortoise foundations, it combines advanced pronunciation correction with precise pause control. Our character-pinyin hybrid modeling approach and BigVGAN2 integration deliver unmatched voice quality and naturalness.

  • Pronunciation Correction: Fix Chinese character mispronunciations using pinyin
  • Pause Control: Precise control over speech pauses through punctuation
  • BigVGAN2 Integration: Enhanced audio quality with state-of-the-art vocoder
  • Superior Performance: Outperforms XTTS, CosyVoice2, and other leading TTS systems

Getting Started with IndexTTS 2

Quick Guide to Using Our TTS Platform

  1. Prepare your reference voice audio file
  2. Enter your text with proper punctuation for pause control
  3. Select your preferred voice cloning settings

IndexTTS 2 Key Features

Discover What Makes Our TTS Platform Stand Out

Character-Pinyin Hybrid Modeling

Advanced approach for correcting Chinese character pronunciations with real-time pinyin integration

Conformer Conditioning Encoder

Improved training stability and voice timbre similarity through advanced encoder architecture

BigVGAN2 Speech Decoder

State-of-the-art vocoder technology for superior audio quality and natural voice synthesis

Multi-Language Support

Trained on tens of thousands of hours of data supporting Chinese, English, and other languages

Frequently Asked Questions

 What makes IndexTTS 2 different from other TTS models?

IndexTTS 2 uses unique character-pinyin hybrid modeling and BigVGAN2 integration, offering superior pronunciation accuracy and natural voice quality compared to XTTS, CosyVoice2, and other leading systems.

 How does IndexTTS 2 handle Chinese pronunciation?

IndexTTS 2 implements character-pinyin hybrid modeling that automatically corrects mispronounced Chinese characters using pinyin information, ensuring accurate pronunciation.

 Can IndexTTS 2 control speech pauses?

Yes! IndexTTS 2 provides precise control over speech pauses through punctuation marks, allowing you to create natural speech rhythm and emphasis.

 What languages does IndexTTS 2 support?

IndexTTS 2 is trained on extensive multilingual data, with excellent performance in Chinese and English, plus support for other languages through its advanced architecture.

 How does IndexTTS 2 achieve superior audio quality?

IndexTTS 2 integrates BigVGAN2 vocoder technology and conformer conditioning encoder, delivering state-of-the-art audio quality with natural voice timbre and clarity.

 What makes IndexTTS 2's voice cloning unique?

IndexTTS 2 uses advanced speaker condition feature representation and BigVGAN2 integration, achieving superior voice similarity and naturalness compared to other TTS systems.

 Is IndexTTS 2 suitable for production use?

Absolutely. IndexTTS 2 is trained on tens of thousands of hours of data and achieves state-of-the-art performance, making it ideal for both research and production applications.

 How does IndexTTS 2 compare to XTTS and Tortoise?

IndexTTS 2 builds upon XTTS and Tortoise foundations but adds significant improvements including character-pinyin modeling, BigVGAN2 integration, and superior training stability.

 What technical requirements does IndexTTS 2 have?

IndexTTS 2 runs efficiently on modern hardware with PyTorch support. For optimal performance, we recommend a stable internet connection and updated Python environment.

 Can I customize IndexTTS 2 for specific voice applications?

Yes! IndexTTS 2's modular architecture allows for flexible customization. You can optimize it for specific languages, voice types, or applications while maintaining high quality output.