The Abilities of Auditory Discrimination for VisuallyImpaired and Sighted in Noise

• Main Authors: Jian-Shan Liu, 劉建杉
• Other Authors: Min-Sheng Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/10913791478838724962

碩士 === 雲林科技大學 === 工業工程與管理研究所碩士班 === 98 === The purpose of this study is to examine the auditory discrimination ability of normal people and people who are visually impaired under different backgrounds with noise conditions. The experiment proceeds in two phases. First, auditory-words-perception task is used to investigate the performances of visually impaired people and normal people on auditory words discrimination on different conditions. Second, environmental-sound-discrimination task is used to test what quantity of simultaneous sounds can be discriminated by two types of participant. The result of first phase indicated that it is necessary to increase 25% of sound level for normal people to definitely obtain 80% of auditory information accuracy, while visually impaired people require only 15% of that to achieve 70% of accuracy. The result of second phase suggested that the visually impaired people’s performance of auditory discriminating is better than normal people’s. Particularly, congenital blind is more sensitive on auditory discriminating than late blind. These results could be a starting point for industrial designer and interface designer to improve the speech recognition design of electronic product, which enable the visually impaired as normal people to effectively get auditory information.