Abstract
It is difficult for the deafblind or the hearing impaired persons to control their voice pitch because they cannot perceive their voice pitch. Especially in case of singing a song it is very difficult for them to control their one because they must keep a musical tone in stably. A voice pitch control system was developed to assist their singing by using a tactile display. The tactile display is equipped with sixty-four piezoelectric vibrators in four rows (16 x 4 rows). A user put his/her the last joint of index finger on the tactile display to receive tactile stimuli. The user can control his/her voice pitch using tactile feedback. In this study the voice pitch of two subjects were measured to calculate interval deviation which was difference from the voice pitch to a target musical interval. The average data of the interval deviation including both subjects was 117.5[cent]. This result shows that the deafblind subjects in this study be able to sing a song as much accuracy as hearing adults or hearing children.
