Application And Research Of Speech Command To Text Edit Tool Based On SAPI Engine

Speech recognition is a new subject which appears in the near half century. It can make a computer understand people's natural language. The recognized information can be used as sound controlling signal applied into many technology field, it has broad prospect in industry, military, traffic, medicine and civil use. As a new technology industry, it gets more and more attention of many countries in the world.Speech is the most suitable communication way to human. With the development of speech recognition technology, it is being used widely in the human-computer interface and in multimedia application areas. The input and output interface becomes more and more important after the enhancement of computer's calculator speed and storage capacity. The interface of human-computer is being a focus on computer research. Because the speech has the abundant information, it contains mankind's intelligence and it's the most normal way in human's everyday communication. Once the computer has this performance, it can be applied in every activities of human's society, it can change the world.The system is mainly to make use of MS Agent which is put forward by Microsoft Company, and carry out repeated exploit under the SAPI engine. And finally it can achieve Agent animation character for the recognition of speech command and speech output, and has always achieved expect purpose now. When you speak notepad, system can immediately recognize it. The Agent animation character respond open notepad in air bubble form, after opening notepad, you can speak open file, print, help and all the command push-button on the notepad, these commands all show on the what can I say dialog. You can look over this dialog and speak speech command which you want. Except recognizing speech command, the system can also recognize 26 English characters and some simple English letters, and make the result of recognition display on the screen.