Docs

Analysis Modes

Choose how your manuscript is split into segments for audio generation.

When you upload a manuscript, Audiobook Studio asks you to choose an analysis mode. This determines how chapters are broken into segments — the building blocks of your audiobook. Each segment maps to one audio snippet with a single voice.

Character Analysis

Character analysis uses an AI language model (LLM) to read your text and automatically identify characters, dialogue, and narration. It produces segments like:

Narrator segments — Prose, description, action beats, attribution tags ("he said").
Dialogue segments — Quoted speech, assigned to the character who speaks it.
Aside segments — Internal thoughts, attributed to the thinking character.

This mode is ideal for fiction with multiple characters, where different voices should speak different parts of the text. After detection, you assign a unique TTS voice to each character in the Voices panel.

Character analysis requires an LLM API key (OpenAI, Anthropic, Google, Groq, or Ollama). Configure yours in Settings before running detection.

When to use Character Analysis

Novels, short stories, and scripts with dialogue
Any text with multiple speakers
When you want the AI to automatically identify who says what

Flow Analysis

Flow analysis splits your text into segments by paragraph — every block of text separated by a blank line becomes one segment. All segments are assigned to a single narrator voice. No AI is used.

This mode is ideal for non-fiction, essays, single-narrator books, or any text where you want direct control over how the text is divided. You can manually split, join, reorder, and reassign segments after analysis.

When to use Flow Analysis

Non-fiction, textbooks, essays, blog posts
Single-narrator audiobooks
When you don't have (or don't want to use) an LLM API key
When you prefer full manual control over segment boundaries

Flow analysis is instant and free — no API calls, no waiting. You can always split or join segments manually afterwards using the segment editor.

Choosing a Mode

You pick the analysis mode right after uploading your manuscript. The choice is saved per-project and determines what happens when you click "Detect" (character mode) or "Analyze" (flow mode) on a chapter.

Switching Modes

You can change the analysis mode at any time in Settings (bottom of the dialog). Changing the mode only affects future analysis — chapters that have already been analyzed keep their current segments.

To re-analyze a chapter with the new mode, click Reset on that chapter first to revert it to raw text, then run analysis again.