The effect of visual information in speech signals by bone-conducted ultrasound

• DOI: 10.1097/wnr.0b013e328334f196
• Publication Date: 2010-01-05T08:20:07Z
• Authors: Akinori Yamashita; Tadashi Nishimura; Yoshiki Nagatani; Takefumi Sakaguchi; Tadao Okayasu; Shuichi Yanai; Hiroshi Hosoi
• Keywords: Intelligibility (philosophy)

A prototype for a bone-conducted ultrasonic hearing aid was developed the profoundly deaf. Previous studies using revealed intelligibility only with use of acoustic media in transmitting language information. In this study, we investigated effects visual information (lip-reading information) on ultrasound perception normal-hearing individuals. We found that lip-reading had clear perception, showing simultaneous presentation audio and improved to levels sufficient speech perception. Our findings also suggested efficacy signal processing techniques improving prior consonants.