Fish Audio S2! Fine-Grained AI Voice Control at the Word Level

Fish Audio S2 is an innovative text-to-speech (TTS) model that introduces a unique approach to expressive voice synthesis by allowing users to embed natural-language inline tags directly into scripts, enabling control of speech delivery at the word or phrase level. Unlike traditional TTS tools that adjust voice settings globally, S2 provides word-level expressive control, accommodating approximately 80 languages and employing open-source model weights and fine-tuning code for broad accessibility. The platform supports an array of tags for emotional, vocal, and pacing effects, and allows for free-form descriptions, enabling users to direct speech like a voice actor, with the flexibility to chain tags and create nuanced vocal performances. By outperforming other systems in speech naturalness and instruction-following ability, Fish Audio S2 sets a new standard in TTS technology with its open-source availability on platforms like GitHub and HuggingFace, allowing developers to self-host and customize the model.

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