Modern text-to-speech (TTS) turns written words into natural-sounding audio...

https://alpha-wiki.win/index.php/How_Do_Customer_Support_Systems_Use_Text-to-Speech%3F

Modern text-to-speech (TTS) turns written words into natural-sounding audio that apps use to make content easier to access and understand. It helps people with visual impairments or reading difficulties by reading text aloud