Speech Synthesizer 5.1 descriptions A great program for Children to learn English Speaking Vocabulary. Speech Synthesizer 5. 0 is a powerful Text-To-Speech voice synthesizer program that is extremely useful for learning English pronunciation & Vocabulary building. The Software runs on all Microsoft Windows Systems & has adjustable speaking speeds as well as an aesthetically designed user interface. Features include Realistic embedded Multiplex Speech Synthesizer High Quality Sound Output Multiple Word Text entry boxes adjustable speaking speed voice tone & a Graphical Equalizer sound-output visual display. The program comes with a embedded Speech Engine that gives a very high quality speech synthesis. The software has been designed for ease of use fast setup & interactivity.