Use Multiple Voices in an AudiobookCopy Anchor Link

In this tutorial you will set up an audiobook with multiple voices and learn how to assign them using the default voice, per-segment overrides, and inline voice spans. By the end, you will be able to produce multi-narrator content like audiobooks with distinct character voices, podcast scripts with separate host and guest voices, or any dialogue-heavy material.

We will use a concrete example throughout: a short novel excerpt with a narrator and two characters.

Want the app to do this for you? On a long book, Casting reads the manuscript, finds who speaks each line, and designs a voice for every character. This tutorial shows how to set up voices by hand, which is also how you fix anything casting gets wrong.

---

What You Will NeedCopy Anchor Link

• Voice Creator Pro, running either as the desktop app on your machine, or in your browser with VCP Cloud
• A document to import (EPUB, PDF, DOCX, or plain text), or text to paste in
• At least two voices prepared in your Library (we will cover this in the next section)

---

Step 1: Prepare Your Voices in the LabCopy Anchor Link

Before opening an audiobook, get your voices ready. You can use any combination of voice types:

For our example novel, we will prepare three voices:

1. Narrator - Open Lab and use the TTS tab to clone your own voice or pick a built-in voice.
2. Elena (the protagonist) - In Lab, switch to the Design tab and describe the voice you want, for example: "young woman, warm, slightly raspy, conversational." Generate until you are happy, then save.
3. Marcus (the antagonist) - Open Voice Search from the sidebar, find a deep male voice you like, and click Add to library. This adds the voice to your library.

Keep cloned and community voices between 3 and 10 seconds. Longer reference audio does not improve quality and makes generation take much longer.

Save each voice to your Library with a clear name. This makes them easy to find when assigning voices in the audiobook.

For a full walkthrough on cloning, see the Clone a Voice tutorial.

---

Step 2: Import Your DocumentCopy Anchor Link

1. Open the Audiobooks section from the sidebar and click New project.
2. Click Import a book and choose your document (EPUB, PDF, DOCX, plain text, and more), then click Continue. You can also paste text into the box and click Create project.
3. Voice Creator Pro will split the text into sections (chapters) and segments (paragraphs) automatically.
4. When the Your book is ready dialog appears, click Skip to follow this tutorial by hand, or Start to let casting find the speakers for you.

For our example, imagine the imported text looks like this:

Chapter 3: The Meeting

Elena pushed through the heavy oak doors. The room smelled of old paper and dust.

"You're late," Marcus said, not looking up from the file in his hands.

"Traffic," Elena replied, dropping her bag on the nearest chair. "What did you find?"

Marcus slid the folder across the table. "Everything. Names, dates, the whole trail."

---

Step 3: Set the Default VoiceCopy Anchor Link

Set a default voice for the audiobook. This voice is used for every segment across all sections unless you override it.

In the Voices panel at the bottom of the left column, click + and add your three voices. Then click set default on Narrator. Since narration makes up the majority of most novel chapters, this saves you from having to assign a voice to every paragraph individually.

---

Step 4: Assign Character Voices with Inline Voice SpansCopy Anchor Link

Most dialogue segments also contain narration (e.g., "Marcus said, not looking up..."), so you will use inline voice spans to assign character voices to just the quoted speech while keeping the narration in the default Narrator voice.

Take this segment: "You're late," Marcus said, not looking up from the file in his hands.

1. Click the segment to select it. It will use the default voice (Narrator).
2. Highlight just the quoted dialogue: "You're late,"
3. In the Selection panel on the right, pick Marcus as the Voice.

The narration ("Marcus said, not looking up from the file in his hands.") stays in the Narrator voice, while the quoted speech plays in Marcus's voice.

Do the same for other dialogue in the chapter:

• In "Traffic," Elena replied, dropping her bag on the nearest chair. "What did you find?" highlight "Traffic," and "What did you find?" and assign the Elena voice.
• In Marcus slid the folder across the table. "Everything. Names, dates, the whole trail." highlight "Everything. Names, dates, the whole trail." and assign the Marcus voice.

This is especially powerful for novels where dialogue and narration are woven together in the same paragraph. You do not need to split the segment manually. Just highlight and assign.

Tip: If a segment is entirely one character with no surrounding narration, choose the voice under Segment voice in the right panel instead of highlighting.

The app adds a short pause each time the voice changes inside a segment, so Marcus does not cut straight in after the narrator. Change it under Pause between speakers in Project Settings.

---

Step 5: Preview Key SegmentsCopy Anchor Link

Before generating the full audiobook, preview a few critical segments to make sure each voice sounds right in context:

1. Pick one segment for each voice (Narrator, Elena, Marcus).
2. Pick at least one segment where you used an inline voice span.
3. Hover each segment and click Generate, then Play to hear it.

If a voice does not sound right, go back to the Lab, tweak the voice, and re-save it. The audiobook will pick up the updated voice automatically.

---

Step 6: Generate and ExportCopy Anchor Link

Once you are happy with the previews:

1. Click Generate All at the top right of the editor to produce audio for all segments. Voice Creator Pro processes each segment with its assigned voice.
2. When generation finishes, listen through the audiobook to spot-check the results.
3. Click Export to save the book in your chosen format (MP3, WAV, FLAC, or M4B for audiobooks with chapter markers). Set the format in Project Settings under Output.

---

Example RecapCopy Anchor Link

Here is how the voice assignments break down for our example chapter:

Three voices, one chapter, zero studio time.

---

TipsCopy Anchor Link

• Prepare all voices before you start the audiobook. Saving voices to your Library in the Lab first means you will not have to leave the audiobook to create them mid-workflow.
• Let casting do the heavy lifting on long books. Run Find speakers, then use the steps above to fix individual lines.
• Choose your default voice strategically. Set the most common voice (usually the narrator) as the default to minimize the number of overrides you need.
• Preview before bulk generation. Generating a few key segments first catches voice mismatches early and saves time.
• Mix voice types freely. A cloned narrator voice paired with designed character voices works great. There is no requirement to stick to one voice source.
• Keep inline spans clean. When highlighting text for an inline voice span, include the full quoted sentence. Cutting mid-word can produce unnatural audio.

---

Next StepsCopy Anchor Link

• Casting - Let an AI service find speakers and design character voices
• Voice Assignment reference - Full details on section, segment, and inline voice controls
• Segments reference - Per-segment settings, splitting, merging, and selection-level overrides
• Audiobooks overview - The full workflow from import to export
• Clone a Voice tutorial - Step-by-step guide to creating cloned voices
• Voice Search - Browse and import community voices