On the Microsoft Windows Start menu, point to Settings, and click Control Panel.
Click Speech, and click the Text To Speech tab.
Do one or more of the following:
Select a voice from the Voice selection box. You can click Preview Voice to hear the voice speak.
To change the rate at which the speech playback voice speaks, use the slider under Voice speed. You can click Audio Output to listen to the speed you've chosen.
Note You must close and reopen Microsoft Excel for the voice speed option to take effect.
Note The available voices depend on your default language installation and any language packs you may have installed.