Anime-Llasa-3B-Captions

Overview

This is Anime-Llasa-3B-Captions, a Text-to-Speech (TTS) model fine-tuned for Japanese, based on NandemoGHS/Anime-Llasa-3B.

This version has been further fine-tuned with additional data, incorporating detailed audio metadata generated by Gemini 2.5 Pro.

What's New: Fine-Tuning with Audio Metadata

The key improvement in this model is its training methodology. I used Gemini 2.5 Pro to generate detailed metadata (captions, speaker profiles, emotions, etc.) for the audio data. The model was then fine-tuned on this dataset, learning to associate text with these rich descriptive tags.

This allows for highly controllable speech synthesis by specifying desired audio characteristics in the prompt.

How to Use: Controlling Speech Generation

You can control the generated speech in two main ways:

1. Using System Prompt Metadata

You can guide the speech synthesis by providing specific tags in the system prompt. The model expects the following format (note: emotion tags are in English, while others should be in Japanese):

• caption: (Required) A general description of the audio content.
• emotion: Emotion tag (e.g., angry, sad, happy, serious).
• profile: Speaker profile (e.g., 若い女性声, 大人の男性声).
• mood: Mood (e.g., 恥ずかしさ, 悲しみ).
• speed: Speaking speed (e.g., ゆっくり, 速い).
• prosody: Prosody/Rhythm (e.g., 震え声, 平坦).
• pitch_timbre: Pitch/Timbre (e.g., 高め, 低め, 息多め).
• style: Style (e.g., ナレーション風, 会話調).
• notes: Special notes (距離感、ブレスなど).

2. Using In-Text Tags (Full-Width Parentheses)

Additionally, you can control the speech style directly within the transcription text by using full-width Japanese parentheses （　）.

For example, adding （囁き） (whisper) to the text will prompt the model to generate that part of the speech in a whispering voice.

Example Input Text: 「これはテストです。（囁き）聞こえますか？」

Demo

For detailed usage instructions and to try the model, please see the Hugging Face Space:

Anime-Llasa-3B-Captions-Demo

Limitations

Please note that due to limitations in the amount and quality of the training data, the model cannot be controlled perfectly. The generated speech may not always reflect the specified tags precisely.

Training Data

The dataset used for this fine-tuning, which includes the Gemini 2.5 Pro generated captions, is available here:

NandemoGHS/Galgame_Gemini_Captions

Old Versions

• Anime-Llasa-3B

License

This model is licensed under CC-BY-NC-4.0.

Additionally, as this model includes outputs from Gemini 2.5 Pro in its training data, any use that competes with Gemini is prohibited.