CosyVoice is an open-source multilingual speech generation model, positioned as a "full-stack solution for large-scale speech generation and deployment". It supports advanced features such as generating natural speech from text, cross-lingual voice cloning, and emotional control, making it suitable for scenarios like TTS (Text-to-Speech), voice assistants, and podcast synthesis.
CosyVoice is developed by the FunAudioLLM organization, released under the Apache-2.0 open-source license, and enjoys high community attention and active engagement.
1. Core Highlights
? Multilingual & Dialect Support
Supports mainstream languages such as Chinese, English, Japanese, and Korean.
Offers production-level support for various Chinese dialects, e.g., Cantonese, Sichuanese, Shanghainese, etc.
Supports cross-lingual and mixed-language voice cloning and synthesis.
⚡ Low-Latency Real-Time Generation
Introduces a bidirectional streaming inference mechanism, achieving first-packet latency as low as ~150ms.
Maintains fluency in scenarios where speech is output while text is still being input.
? High Naturalness & Controllability
Improves pronunciation accuracy, with overall quality significantly better than earlier versions.
Supports control tags for emotion, speaking rate, volume, etc. (configurable at the API or service level).
? Zero-Shot Voice Cloning
Can generate speech output with a similar voice based on a short audio clip without requiring extensive samples (Zero-shot Voice Cloning).
2. Core Features & Modules
| Feature Description | |
| TTS Speech Synthesis | Directly converts text into high-fidelity speech |
| Zero-shot Voice Cloning | Clones a voice using a small number of audio samples |
| Emotional Speech Control | Allows setting parameters for expression, mood, tone, etc. |
| Cross-Lingual Synthesis | Supports output in different languages and mixed languages |
| Streaming Output Mechanism | Enables low-latency real-time speech generation |
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