Research Of The Embedded Speech Recognition And Intercourse System Applied In Service Robot

With the development of modern science and computer technology, people need a more advantageous and natural method to communicate with the machinery. In terms of this, language is the most important and effective information source. And further more, it has always been a dream for human being to realize man-machine interaction via speech. Thanks to the emergence of speech technology, this dream comes true. Especially in the intelligent service robot system, it is the most immediately measure to realize speech communication.Presently, with the swift development of intellectualized product and consumptive electron product, Speech Recognition System has transferred largely from PC system to embedded equipment, Embedded Speech Recognition System has found a wider and wider application. This paper focuses mainly on the man-machine interaction system of domestic service robot based on embedded speech recognition technology, the user can use speech to control the movement of the service robot and can talk with the robot.This paper presents the fundamental knowledge of speech recognition and several speech recognition algorithms, then we give the hardware and software design of the system according to the characteristics of the embedded system and the particular requirements of the project.SPCE061A Speech Chip produced in Taiwan is selected as the core chip in the Embedded Speech Recognition and Interaction hardware system. It mainly contains chip circuit and the periphery circuit of it, power circuit, speech input circuit, speech output circuit, debugging circuit and RS232 circuit.In the software part, Dynamic Time Warping (DTW) that needs lesser account and lesser system resources is selected to achieve speech recognition. The software of speech training, speech interaction, storage and transferring of the speech resource and RS232 communication is designed to realize the speech control and the speech interaction.The multicenter speech input circuit is designed to improve the capacity of...