Study on 3-Dimensional Distance Estimation Under the Condition of Auditory Apparent Motion:A Comparative Study between Blind Students and Normal Students

To figure out whether the ISI, audio frequency and educational systems have an influence on the blind people's ability of distance estimation, the researcher conducted an experiment with E-prime under the condition of auditory apparent motion. The participants are made up of 32 blind students and 32 normal students which are selected randomly from different educational systems (mainland / Hong Kong). The independent variable are groups (the blind / the normal), the between-subject variable, and ISI (50ms / 100ms) and sound frequencies (low pitch / medium pitch / high pitch), the within-subject variables. It can be concluded that: the 3-dimensional distance estimation mechanism of the blind students is different from that of the normal students; ISI and audio frequencies have a significant influence on students' ability of distance estimation; the education system have little impact on students' ability of estimated distance.