I had the same question some months ago, as it helps me to focus and read long articles. You have to do some fiddling but it's doable. https://askubuntu.com/qu

I had the same question some months ago, as it helps me to focus and read long articles. You have to do some fiddling but it's doable. https://askubuntu.com/questions/953509/how-can-i-change-the-voice-used-by-firefox-reader-view-narrator-in-ubuntu https://askubuntu.com/questions/953509/how-can-i-change-the-...