We have been interested in visualizing speech information to observe speech phenomena, analyze speech signal, and substitute the hearing disorders or the speech disorders. In order to realize such speech visualization, we have developed a software tool, Speech-ART, and utilized it in investigating speech. Although the functional advantages of system have been effective in offline operation, the use of a speech training tool or real-time observation of speech sound has been restricted. Consequently, we have increased efficiency in analyzing speech parameters and displaying speech image, and then developed a real-time speech visualizing system. In this paper, we describe the background of speech visualization, the characteristic of our system, and the applications of the system in future.
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