Google is adding an audio feature to its AI-powered note-taking app NotebookLM. The new “Audio Overview” allows users to get verbal explanations of complex topics from uploaded documents, as Aisha Malik reports for TechCrunch. AI-generated virtual hosts summarize the content and explain difficult concepts using metaphors. The feature is aimed at people who absorb information better by listening. Users can also download the audio conversations to listen to on the go. The feature is currently available in English only and is still in beta.