How to create real-time, automatic captions or subtitles in PowerPoint or Google Slides
PowerPoint:
PowerPoint for Microsoft 365 can transcribe your words as you present and display them on-screen as captions in the same language you are speaking, or as subtitles translated to another language. This can help accommodate individuals in the audience who may be deaf or hard of hearing, or more familiar with another language, respectively.
Requirements and set up how to.
Google Slides:
The closed captions feature is available when presenting in Google Slides. It uses your computer’s microphone to detect your spoken presentation, then transcribes—in real time—what you say as captions on the slides you’re presenting. When you begin presenting, click the “CC” button in the navigation box (or use the shortcut Ctrl + Shift + c in Chrome OS / Windows or ⌘ + Shift + c in Mac).