Robots That Can Hear, Understand and Talk

In this survey paper we analytically examine the state of the art in speech and natural language processing technologies, and one of their most promising applications in the robotics world as a user interface to facilitate human-robot interaction/communication and robot control by spoken natural language. Theoretical aspects of spoken language technology and the main bottlenecks in developing a conversational interface for a robot have been presented in depth with results found while searching the literature related to the major breakthroughs made in this field. In this study, we present a brief technical introduction to talk-active robots, and to discuss related future technical challenges and technical approaches used. Efforts have been made to highlight the limitations and missing directions of the research and development in the spoken language technology which are creating hurdles in the development of voice-active robots for real-world applications