The Research Of The Control System About The Toy Car Controlled By Speech

Since human being can make various machines and use them ,the people have had an ideal that various machines could understand their language, and act according to their orally orders, thereby realizing the linguistic communion between the human and the machine. With the unceasing development of the technology, and the appearance of Speech Recognition Technology, the ideal of human being has realized. The Speech Recognition Technology is a high technology, which make the machine change the speech signals into homologous text or order by recognition and comprehend. The speech recognition is a cross-subject, and it is becoming to the key-technology of human-computer interface in information technology. The application of speech recognition has become a rising competitive high technology industry. Today, the products of speech recognition have already taken up more and more proportion in the application of human-computer interaction.Firstly, this paper introduces definition, sort, methods and means, situation of development both at home and abroad, and specifies the basic principles of Speech Recognition simply.Secondly, according to the constitutive model of basic principles of Speech Recognition System, the paper introduces the basic principles about the speech data signal process and the mode recognition and so forth from pre-treatment, end point detection to template production, template management, template match.Then, this paper introduces a simple Speech Recognition System of specified speaker, small vocabulary, and isolated word speech recognition systems by using the Visual C++6.0 and MATLAB according to the basic methods of the DTW model's Speech Recognition and exercises. The basic constitutive model between system and Speech Recognition is same. In the exercising process, we can read the sample data form the wave file, calculate the character vector made by LPCC and MFCC, exercise according to the methods of robustness, gain the necessary templates of sequential Speech Recognition, and put them to the template library. While recognizing, it is important to calculate the character vector of speech input, gain the best template match by contrasting the template match's methods and the speech template in the template library. Then I give a detailed account of the SPCE061A, and transfer the program to the SPCE061 A, and SPCE061A deliver the electric signal to the control panel, and then we may control the movement of the toy car by control panel.Finally, this paper summarizes the system's function and indicates its improvable direction. It is a basic research for us to further develop the practicality of Speech Recognition System through actual test and study of Speech Recognition System.