In order to use the Speech Action, you must have the Microsoft Speech API 5.x be installed. You can obtain the latest Version from the following link: www.microsoft.com/speech/
Here general options are also same as in above actions.
Speech Volume
Defines the Volume level of the Speech.
Talk Rate
This defines the how fast the text is spoken. The value can be between -10(slow) to +10(fast).
Voice
Set the voice that will be used by the Speech Engine. To obtain more free voices, please visit: www.microsoft.com/speech/
Audio Output device
If you have more then one soundcard installed, you can select which one will be used here.