Apple won’t confirm it. But Bennett says she is Siri. Professionals who know her voice, have worked with her and represent her legally say she is Siri. And an audio-forensics expert with 30 years of experience has studied both voices and says he is “100%” certain the two are the same.

Bennett, who won’t divulge her age, fell into voice work by accident in the 1970s. Today, she can be heard worldwide. She speaks up in commercials and on countless phone systems. She spells out directions from GPS devices and addresses travelers in Delta airport terminals.

Until now, it’s been a career that’s afforded her anonymity.

But a new Apple mobile operating system, iOS 7, with new Siri voices means that Bennett’s reign as the American Siri is slowly coming to an end. At the same time, tech-news site The Verge posted a video last month, “How Siri found its voice,” that led some viewers to believe that Allison Dufty, the featured voiceover talent, was Siri. A horrified Dufty scrambled in response, writing on her website that she is “absolutely, positively NOT the voice of Siri,” but not before some bloggers had bought into the hype.