Concepts

Concepts

Understanding how Audiobook Studio organizes data is key to a smooth workflow.

🏗️ Hierarchy

• Library: The collection of all your projects.
• Project: Represents a single audiobook or collection. Contains metadata (Author, Series, Cover).
• Chapter: A logical division of a project. Contains the text and its generated audio.
• Segment: A single sentence or paragraph within a chapter. This is the smallest unit of generation.
• Character: A persona assigned to segments. Chapters are narrated by a "Narrator" by default, but you can assign specific "Characters" to dialogue.

🎙️ AI Voice Lab

• Voice: A higher-level identity (e.g., "Dracula"). This is what you assign to Characters in your projects.
• Variant: A specific stylistic or emotional performance of a Voice (e.g., "Main - Calm", "Main - Shouting").
• Sample: High-quality .wav reference audio used to clone a Voice.

🔄 Generation Workflow

1. Analysis: The system scans your text for long sentences (over 500 characters) and automatically splits them to ensure high-quality TTS.
2. Queuing: When you click "Generate", segments are added to a background queue.
3. Synthesis: The Coqui XTTS engine processes segments one by one.
4. Baking: After all segments in a chapter are generated, they are "stitched" into a master WAV and simultaneously encoded into a high-quality M4A chapter cache.
5. Assembly: Finally, the system performs Lossless Concatenation of the M4A chapter files into a standard .m4b container. Because the encodes are cached, rebuilding the audiobook is nearly instantaneous.

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