Depending upon your configuration and installed TTS engines, you can hear most text that appears on your screen in Word, Outlook, PowerPoint, and OneNote. Text-to-speech (TTS) is the ability of your computer to play back written text as spoken words. You can use Speak to have text read aloud in the language of your version of Office. Speak is a built-in feature of Word, Outlook, PowerPoint, and OneNote. Word for Microsoft 365 Outlook for Microsoft 365 PowerPoint for Microsoft 365 Word 2021 Outlook 2021 PowerPoint 2021 OneNote 2021 Word 2019 Outlook 2019 PowerPoint 2019 Word 2016 Outlook 2016 PowerPoint 2016 OneNote 2016 Word 2013 Outlook 2013 PowerPoint 2013 OneNote 2013 Office 365 Small Business Word 2010 Outlook 2010 PowerPoint 2010 OneNote 2010 Office for business More.