Experimental Study On Lipreading Chinese Phonetic Identification For The Hearing Handicapped

Because of the loss of the hearing, the students with the hearing handicap usually communicate with each other by lipreading and sign language. As a complicated visually spoken perception, lipreading mainly includes visual perception, motor perception, and spoken perception. There are more studies abroad, while the less domestically. This paper designs the serial experiments to control the conditions, and explores the roles of the hearing loss, and the hearing aid, and the spoken environments in lipreading phonetic identification, based on the summary of the related researches on lipreading.The first part reviews the position's change of lipreading in oral teaching, and mainly analyzes the two brain mechanism of the hearing-handicapped students' lipreading, which are the site-specific integration model and the communication relay model, and expounds the representative views and controversy on the information-processing mechanism of the lipreading, and exhibits the development of assistive technology. Finally, the basic research design is proposed to explore increasingly the role of the hearing experience in lipreading Chinese phonetic identification for the hearing handicapped.The second part is the experimental study, which includes four research themes. There are three experiments to control the related experimental conditions in the first theme. There are three experiments to explore whether the hearing loss influences the development of the lipreading ability in the second theme. There are two experiments to explore the hearing aid's role in lipreading phonetic identification in the third theme. There are two experiments to explore the hearing spoken environments' function in lipreading in the fourth theme. There are some results as following. (1) Experiment 1 finds that the correctness of the single word is significant higher than that of the compound word. Experiment 2 indicates there is the familiarity effect in lipreading phonetic identification. Experiment 3 declares that there is no significant differences exist between machine test and face-to-face test. (2) The hearing loss doesn't necessarily make the hearing handicapped become the expert lipreader. Experiment 4 finds that the lipreading ability of the hearing handicapped is as similar as that of the hearing normal. Experiment 5 and 6 find respectively the onset time and the degree of the hearing loss do not influence the lipreading skill. (3) The hearing aid significantly increases the correctness of lipreading. Experiment 7 and 8 indicate there is hearing...