Google Faces Lawsuit After Former NPR Host Says His Voice Lives Inside NotebookLM

A familiar voice on the radio is now at the center of a legal battle with one of the biggest tech companies on the planet.

David Greene, the longtime face of NPR’s Morning Edition and current host of KCRW’s Left, Right & Center, has filed a lawsuit against Google and its parent company Alphabet. His claim? That Google took his voice without permission and used it to build the AI podcast feature inside NotebookLM.

What Is NotebookLM, Exactly?

If you haven’t used it yet, NotebookLM is Google’s AI-powered research tool. You upload documents, articles, or notes, and the system helps you make sense of them all.

But here’s where things get interesting. Back in fall 2024, Google added an Audio Overviews feature. Drop in a file and the tool generates a podcast-style summary of your content, complete with two AI voices chatting about the material. It sounds surprisingly natural.

That naturalness is exactly what landed Google in court.

Fans Noticed Something Familiar

Greene didn’t discover the issue on his own. Friends and listeners started reaching out after the Audio Overviews feature launched, telling him that one of the AI voices sounded a lot like him.

So Greene hired a forensic software company that specializes in voice recognition. The firm ran a detailed comparison between his voice and the male voice used in NotebookLM’s Audio Overviews. Their analysis returned a confidence rating of 53% to 60% on a scale from -100% to 100% that Greene’s voice was used to train the software.

That’s not a slam-dunk finding. But it’s enough to fuel a serious legal challenge.

Google Pushes Back Hard

Google isn’t staying quiet. A spokesperson told CNET flatly: “These allegations are baseless. The sound of the male voice in NotebookLM’s Audio Overviews is based on a paid professional actor Google hired.”

So far, Google hasn’t named the voice actor they say they worked with. That detail will likely become a significant point of contention as the lawsuit moves forward in California Superior Court in Santa Clara County.

This Isn’t the First AI Voice Controversy

Greene’s case fits a growing pattern in the tech industry. AI companies have repeatedly found themselves in hot water over voices that sound uncomfortably close to real people.

In 2024, actress Scarlett Johansson publicly raised concerns that OpenAI had created a voice assistant that sounded strikingly similar to hers. OpenAI pulled the voice from its platform. More recently, ElevenLabs took a licensing approach instead, striking deals to use the voices of celebrities like Matthew McConaughey and Michael Caine with their full knowledge and compensation.

The licensing path treats voice as intellectual property and pays creators fairly. The lawsuit path suggests some AI training may have skipped that step entirely.

Why This Case Matters Beyond David Greene

Voice is personal in a way that text and images aren’t quite. A person’s voice carries decades of professional work, their reputation, and something deeply tied to identity. For a radio host who spent years building audience trust through sound alone, that’s not a small thing.

The broader question this lawsuit raises is uncomfortable for the entire AI industry. How do companies ensure that the voices powering their AI tools were obtained with proper consent and compensation? And what happens when the answer isn’t clear?

Greene’s case won’t be the last of its kind. As AI-generated audio gets better and spreads further, more creators will start listening closely and asking the same questions he did. The tech industry needs cleaner answers than it currently has.