Audio Overview Tutorial

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NotebookLM Audio Overview Tutorial: Complete Step-by-Step Guide (2026)

NotebookLM's Audio Overview feature transforms documents into engaging podcast-style conversations between two AI hosts. In this tutorial, I'll show you exactly how to create your first Audio Overview, from uploading sources to customizing output for maximum impact.

What is Audio Overview?

Audio Overview converts your uploaded documents into natural-sounding conversations between two AI hosts. Unlike robotic text-to-speech, it creates dynamic discussions where hosts build on each other's points, ask questions, and add humor. Used by over 2 million people since launching in September 2024, it synthesizes information across multiple sources and presents it in genuinely engaging audio format.

Perfect for students transforming textbooks into study podcasts, professionals converting reports into audio summaries, researchers grasping key findings from multiple papers, and content creators producing podcast content without recording equipment.

What You'll Need

  • A Google account (NotebookLM is free)
  • Source documents (PDFs, Google Docs, URLs, or text)
  • 10-15 minutes
  • Headphones or speakers

Step-by-Step: Creating Your First Audio Overview

Step 1: Access NotebookLM and Create Notebook

Navigate to notebooklm.google.com and sign in with your Google account. Click "Create" to start a new notebook. Give it a descriptive name like "Mediterranean Diet Research" rather than generic names—this helps you find it later.

Step 2: Upload Your Sources

Click "Add Sources" to upload content:

From Your Computer: PDFs, text files (.txt, .md) From Google Drive: Google Docs and Slides (auto-synced) From the Web: URLs, YouTube videos (uses transcript), audio files Copy-Paste: Quotes, notes, transcripts, any text How Many Sources? Start with 2-4 sources for your first Audio Overview. This creates a 6-10 minute discussion without overwhelming the AI. You can use up to 50 sources per notebook, though 5-10 is optimal. Example Setup: Learning about productivity? Upload:

1. PDF article about Pomodoro Technique

2. Blog post URL about time-blocking

3. Google Doc with personal productivity notes

4. Productivity podcast transcript

Step 3: Wait for Processing

After uploading, NotebookLM analyzes your content (30 seconds to 5 minutes depending on document size). A spinning circle shows processing status. Once complete, the Notebook Guide panel appears on the right.

Step 4: Quick Generate Method

In the Notebook Guide, find "Audio Overview" and click "Generate". The AI automatically selects topics from all sources. Processing takes 3-5 minutes, producing a 6-10 minute audio discussion. You can work elsewhere while it generates in the background.

Step 5: Advanced Customization (Recommended!)

For better results, click "Customize" instead of quick generate:

Customization Options: Custom Instructions: Write 1-3 sentences directing the focus:
  • "Focus on practical applications for small business owners"
  • "Emphasize scientific research and statistics"
  • "Make this accessible for complete beginners"
Length: Brief (2-3 min), Standard (5-6 min), or Extended (8-10 min) Tone: Professional, Conversational, Educational, or Enthusiastic Source Selection: Deselect sources you don't want included Example Prompt: "Create a conversation explaining time management for working parents. Focus on practical tips that can be implemented immediately. Use an encouraging tone." + Standard length

Step 6: Listen, Download, or Share

Once generated, the audio player appears with:

  • Play/Pause and speed controls (0.5x to 2x)
  • Download button (saves as WAV file)
  • Share button (creates listen-only link)
  • Interactive Mode (beta): Join the conversation and ask questions
To Download: Click three-dot menu → Download → File saves to your device To Share: Click Share → Copy link → Anyone can listen without a NotebookLM account

Step 7: Create Multiple Versions (Pro Strategy)

Generate 2-3 versions with different customization prompts. One might emphasize theory, another practical application. Compare and choose the best version for your needs. All versions save in the Notebook Guide.

Pro Tips for Better Audio Overviews

Structure Documents First: Organize sources with clear headings before uploading—NotebookLM uses structure to create logical flow. Mix Source Types: Combine research papers with blog posts. AI hosts blend academic credibility with practical accessibility. Add Context: Upload a text file explaining your audience or use case. Example: "For college students with no science background." Use Specific Prompts: "Focus on case studies" produces better results than "make it interesting." Generate Multiple Versions: Try 2-3 different prompts, compare results, keep the best.

Troubleshooting Common Issues

Too Generic? Use Customize with specific instructions about what to emphasize. Missing Information? Check all relevant sources are selected during customization. Break very long documents into smaller sections. Takes Too Long? Large notebooks (30+ sources) process slowly. Generate with fewer sources selected or split into multiple notebooks. Can't Download? Check browser settings allow downloads. Try Chrome for best compatibility. Audio Quality Issues? Rare, but try regenerating. Report persistent problems via feedback button.

Frequently Asked Questions

Q: How long can Audio Overviews be?

A: Currently 2-15 minutes depending on sources and settings. Choose Brief (2-3 min), Standard (5-6 min), or Extended (8-10 min) in customization.

Q: Can I edit the audio afterward?

A: NotebookLM doesn't offer editing, but download the WAV file and edit in Audacity (free) or professional audio software.

Q: Are other languages supported?

A: Yes! NotebookLM supports 80+ languages, generating audio in the same language as your source documents.

Q: Can I use Audio Overviews commercially?

A: Yes, audio created from your own sources can be used personally, educationally, or commercially. Ensure source materials don't have copyright restrictions.

Q: How accurate is the information?

A: Very accurate—NotebookLM only uses your uploaded sources, never "hallucinates" information. However, verify important details by referencing original sources.

Q: Do Audio Overviews save permanently?

A: Yes, they remain in your notebook indefinitely. Download the WAV file for permanent backup independent of your notebook.

Real-World Example: Study Guide Creation

Scenario: College student Sarah preparing for biology exam covering cellular processes across three chapters. Sources Uploaded:
  • Chapter 12 textbook PDF (cellular respiration, 45 pages)
  • Chapter 13 textbook PDF (photosynthesis, 38 pages)
  • Professor's lecture slides from two classes (Google Slides)
  • Personal study notes with confusing concepts highlighted (pasted text)
Custom Prompt Used: "Create a study conversation focusing on the key differences between cellular respiration and photosynthesis. Emphasize the chemical equations, ATP production, and real-world applications. Explain why understanding both processes matters for medicine and agriculture. Make it encouraging for exam prep, breaking down complex concepts step-by-step." Settings: Standard length (5-6 minutes), Educational tone The Result:

NotebookLM generated a 7-minute podcast where two hosts discussed:

  • Opening: Why these processes are the "engine of life"
  • Core comparison: Inputs and outputs of each process
  • Chemical equations: Broken down without jargon
  • ATP focus: How energy currency works in both processes
  • Real examples: Why diabetics care about cellular respiration, why climate change affects photosynthesis
  • Study tips: Mnemonic devices the hosts created on the fly
  • Encouragement: "You've got this" closing message
Impact: Sarah listened during her morning jog, replayed it twice during lunch, and once before bed. The conversational format helped her remember key concepts better than reading highlighted passages. She downloaded the audio for offline access during her commute and scored 94% on the exam. Key Success Factor: The specific customization prompt telling the AI exactly what to emphasize and how to present it. Generic prompts produce generic results; specific prompts create targeted, useful content.

Start Creating Your Audio Overviews Today

Audio Overview transforms how you consume information. Whether you're studying, researching, working, or creating content, this tool makes complex material accessible and engaging.

Your next steps:

1. Visit notebooklm.google.com

2. Upload 2-4 documents on a topic you're learning

3. Click Customize, add specific instructions

4. Generate and listen

The more you experiment with customization prompts, the better your results. Start with one Audio Overview today—you'll wonder how you ever learned without it.

--- Last updated: February 2026 | All features free in NotebookLM

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