How to change NotebookLM Audio Overview voices with ElevenLabs and SpeakerSplit.io

How to Change Voices in Notebook LM Audio Overviews

Introduction to Notebook LM Voice Options

• The tutorial introduces how to change the voice for Notebook LM audio overviews, highlighting the availability of both male and female speakers that sound natural and realistic.

• As Notebook LM gains popularity, users may recognize the default voices, prompting a need for unique voice options.

Steps to Change Voices

• The presenter begins by navigating to the Notebook LM site to create a new audio overview based on a historical documentary.

• A YouTube documentary about Rollo the Dark Age Warrior is selected as source material; the URL is copied into Notebook LM for processing.

Generating and Processing Audio

• After generating an audio overview, there’s a plan to separate it into two tracks: one for each speaker (male and female).

• The process involves using 11 Labs for voice changing, allowing different speech patterns while maintaining content integrity.

Finalizing Audio Tracks

• Once generated, the podcast is played back. It features an engaging introduction about Rollo's story.

• The audio track is named "Rolo documentary" before downloading it for further processing.

Speaker Separation Process

• Using Speaker Split, an AI tool, the downloaded audio file is uploaded to separate it into distinct tracks for each speaker.

• This separation allows independent lip-syncing of audio channels during video production.

Limitations and Adjustments

• There are limitations with 11 Labs regarding file size (50 MB max) and duration (5 minutes max), necessitating adjustments.

Exploring the Transformation of R the Viking Warrior

Introduction to R's Story

• The narrative begins with an introduction to R, a Viking warrior who became the first ruler of Normandy, highlighting his journey filled with brutal raids and cunning strategies.

• The voice used in the podcast is from Notebook LM, which has consistent voice characteristics due to limited options for changing voice actors.

Voice Modification Process

• The speaker discusses using 11 Labs' voice changer to alter the original audio, selecting different characters for a unique presentation.

• After processing, the new character voices are saved and prepared for further editing; this includes switching from male-female to two male voice actors.

Comparison of Original and Remixed Versions

• A preview is provided comparing the original Notebook LM audio with the remixed version featuring two distinct male voices.

• The remixed version retains key elements of R's story while showcasing how he transitioned from raiding to establishing a powerful dynasty.

Contextualizing R's Era

• To understand R’s transformation, it’s essential to grasp 9th-century Europe’s context—characterized by constant Viking raids that instilled fear in coastal communities.

• The discussion emphasizes that these raids were not random acts but driven by deeper motivations such as harsh climates and resource scarcity.

Final Thoughts on Voice Conversion Limitations

How to Remix Voice Actors in Notebook LM

Overview of the Tutorial

• The tutorial focuses on selecting appropriate voice actors that match the cadence and speed of a podcast, emphasizing the importance of time, care, and consideration in this process.

• It explains how to utilize Notebook LM's audio overview feature to work with male and female voice actors provided by the platform.

• Users are guided on separating audio tracks for remixing purposes, allowing for more personalized content creation.

Process Explanation

• The tutorial details how to use 11 Labs for remixing voices after separating the audio tracks from Notebook LM.