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Xiaomi MiMo-V2-TTS - Xiaomi's large speech synthesis model

Author: AI小集 · Original source: AI工具集

What is Xiaomi MiMo-V2-TTS

Xiaomi MiMo-V2-TTS is Xiaomi'sspeech synthesislarge model launched for the Agent era. The model is based on a self-developed Audio Tokenizer and multi-codebook architecture, pretrained on hundreds of millions of hours of speech data with multi-dimensional reinforcement learning, achieving highly controllable multi-granularity speech style control—precise adjustment from overall tone to local emotion, supporting tone shifts and emotional transitions. The model has strong text understanding capabilities, can intelligently recognize punctuation and modal particles; the model also supports dialects, role-playing, and singing synthesis, enabling AI to "understand" and naturally express with a warm, soulful voice.

Xiaomi MiMo-V2-TTS

Main features of Xiaomi MiMo-V2-TTS

  • Multi-level speech style control: supports precise adjustment from overall style setting to local emotional expression, and can complete tone shifts and emotional transitions within the same sentence.
  • Intelligent text understanding: automatically recognizes punctuation, modal particles, emphasis markers, and other formatting signals, converting them into natural speech expression without additional annotation.
  • Dialect support: supports natural pronunciation of multiple dialects such as Northeastern Mandarin, Sichuanese, Henan dialect, Cantonese, and Taiwanese Mandarin.
  • Role-playing: the model can perform stylized character portrayals and imitate the tone of specific people.
  • Singing synthesis: supports accurate expression of pitch and rhythm, enabling natural and expressive singing.
  • High-fidelity timbre cloning: the model can clone specific timbres while maintaining high-quality output.

Technical principles of Xiaomi MiMo-V2-TTS

  • Self-developed Audio Tokenizer: uses MiMo Audio Tokenizer to achieve efficient discrete representation of speech signals.
  • Multi-codebook joint modeling architecture: finely models speech through multi-layer codebooks, fully preserving the rich information in the original speech.
  • Ultra-large-scale pretraining: uses hundreds of millions of hours of speech data for speech-text mixed pretraining, acquiring unified capabilities for cross-modal alignment and understanding-generation.
  • High-quality supervised fine-tuning: fine-tuned on a small amount of high-quality data to obtain generalizable multi-granularity and multi-style instruction control capabilities.
  • Multi-dimensional reinforcement learning optimization: the model is continuously optimized around dimensions such as prosody, sound quality, word expression, timbre cloning, and scenario tone, directly using speech-related reward signals to improve generation quality.

Key information and usage requirements of Xiaomi MiMo-V2-TTS

  • Model positioning: a large speech synthesis model designed specifically for the Agent era, giving intelligent agents warm and emotional voice expression capabilities.
  • Core architecture: based on the self-developed MiMo Audio Tokenizer and multi-codebook speech-text joint modeling architecture.
  • Training data scale: hundreds of millions of hours of speech data.
  • Technical route: ultra-large-scale pretraining + high-quality supervised fine-tuning + multi-dimensional reinforcement learning post-training.
  • Supported languages: currently covers Chinese and English, with plans to expand to more languages in the future.
  • Integration planning: Will deeply integrate with MiMo-V2-Omni's multimodal understanding capabilities to create a full-modal Agent that can see, understand, and narrate.

Core Advantages of Xiaomi MiMo-V2-TTS

  • Full-Stack Agent-Native Design: Built specifically for the Agent era, forming a complete technology loop with the MiMo-V2 series models to achieve full-chain capabilities from understanding to expression.
  • Fine-Grained Style Control: Supports multi-level adjustment from overall tone to local emotion, enabling tone shifts and emotional transitions within the same sentence, with industry-leading control granularity.
  • Ultra-Large-Scale Data Training: Pre-trained on hundreds of millions of hours of speech data, covering rich speaking styles and scenarios, with strong generalization ability.
  • End-to-End Intelligent Understanding: Automatically recognizes punctuation, modal particles, and emphasis markers in text without additional annotation, intelligently converting them into natural speech expression.
  • Multi-Dimensional Reinforcement Learning Optimization: Directly optimized through multi-dimensional reward signals such as prosody, audio quality, word expression, timbre cloning, and scenario tone, balancing stability and expressiveness.

How to Use Xiaomi MiMo-V2-TTS

Plans to deeply integrate with MiMo-V2-Omni's multimodal capabilities in the future.

Comparison of Xiaomi MiMo-V2-TTS with Similar Competing Products

Comparison Dimension Xiaomi MiMo-V2-TTS OpenAI GPT-4o Voice ElevenLabs
Core Positioning Full-stack speech synthesis designed for the Agent era Native speech capability of a multimodal large model Professional-grade AI speech synthesis platform
Architecture Features Self-developed Audio Tokenizer + multi-codebook joint modeling End-to-end multimodal unified architecture Speech cloning and synthesis based on deep learning
Style Control Multi-level (overall + local), supports intra-sentence emotional transitions Natural conversational style, relatively natural emotional expression Supports style adjustment, but granularity is relatively coarse
Pre-training Data Hundreds of millions of hours of speech data Specific data scale not disclosed Specific data scale not disclosed
Optimization Method Multi-dimensional reinforcement learning (prosody/audio quality/words/timbre/scenario) End-to-end optimization, details not disclosed Continuous optimization based on user feedback
Dialect Support Northeastern Mandarin, Sichuanese, Henanese, Cantonese, Taiwanese accent, etc. Mainly supports mainstream languages, limited dialect capability Depends on training data, weak support for Chinese dialects
Role-Playing Supports stylized character performances Supports multi-character dialogue Supports voice cloning, role-playing requires additional configuration
Singing Voice Synthesis Native support Not supported Not supported
Integration with Agent Deeply integrated with MiMo-V2-Omni, native Agent design Combined with GPT-4o multimodal capabilities Requires API integration, not a native Agent design

Application Scenarios of Xiaomi MiMo-V2-TTS

  • Intelligent Assistant Voice Interaction: Give AI Agents natural, emotional voices, achieving the leap from "being heard clearly" to "having vitality," making human-machine conversation warmer.
  • Multi-character content creation: Use role-playing capabilities to generate stylized character voices for scenarios such as audiobooks, podcasts, and game voiceovers, reducing the cost of professional voice acting.
  • Real-time emotional companionship: Through fine-grained emotion adjustment, provide contextually appropriate voice feedback in scenarios such as psychological counseling, online education, and virtual companionship.
  • Cross-dialect service coverage: With multi-dialect support, provide natural and friendly dialect interaction experiences for localized customer service, smart home control, elderly-friendly applications, and more.
  • Creative entertainment production: Use singing voice synthesis capabilities to assist in the production of entertainment content such as music creation, virtual idol performances, and personalized ringtone production.