Speech user interface for computer based education system

Speech is a very natural and basic way in human-to-human communication. Here we are presenting design methodology of speech user interface for human computer interaction. The Speech User Interface (SUI) plays an important role in the field of education technology. It provides assistance to those, who are unable to operate computer with the traditional input devices like keyboard and mouse, especially for old aged people, young children and disables. We have developed an application for learning mathematical operations for young children age group below 10 yrs. This application also works as a speech operated calculator. We have also discussed some other speech operated applications for educational technology and computer assisted learning in further section. Noisy environment is major limitation for these applications. We have additionally implemented noise estimation and removal algorithms to achieve good performance.