For customers using OneNote Learning Tools, this article documents ways to download new voices for the Text-to-Speech feature in Windows 10.
Install a new Text-to-Speech voices in Windows 10
Select the Start button, and then select Settings.
With the Windows Settings in view, select Time & Language.
Select Language, then select Add a language.
Choose the language you want from the list. The language will begin to install.
The presence of the text-to-speech icon indicates that it's available for a given language.