Simply press “Windows” key PLUS “H” key on your keyboard together to bring up the dictation toolbar. If the option appear, simply enable it and press Windows+H keys again.
Now, fire up a typing application i.e. Windows Notepad and start speaking. The words will appear typed magically on your screen 🙂
You can either click the “microphone” icon to stop dictating or simply press the Windows+H keys again to disable typing.
This technology is also called Speech-To-Text and don’t misinterpret it as Text-To-Speech which is opposite to what you are trying to do.