Click the Microphone button on the Language bar. (If the Language bar isn't displayed, open the Tools menu and select Speech.)
Click the Dictation button on the Language bar.
Say the words you want to appear in your document.
To stop dictating, click the Dictation button; then click the Microphone button (or say "microphone") to turn off the microphone.
INTRODUCTION
The whole point of using Office's Speech Recognition feature is so you can speak into your microphone, rather than typing, to input data into the various Office applications. In Excel, for example, say the numbers or words you want to enter into a cell and say "enter."
TIP
Adding Punctuation and Nonprinting Characters
To add punctuation to your document, simply say the name of the mark you want to add. For example, to add a comma, say the word "comma." To move to a new line, say "new line"; to begin a new paragraph, say "new paragraph" or "enter." You can also issue the following self-explanatory commands: "tab," "space," "up," "down," "left," and "right."