Judging hardness of an object from the sounds of tapping created by a white cane
Judging hardness of an object from the sounds of tapping created by a white cane
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根据白手杖敲击的声音判断物体的硬度
DOI：
10.1109/embc.2014.6944965
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
K. Doi
中科院分区：
文献类型：
--
作者：
Kiyohiko Nunokawa;Y. Seki;S. Ino;K. Doi
白色手杖在视障人士的独立行动支持方面发挥着至关重要的作用。允许通过接触白色手杖来识别目标属性是一个重要的功能。我们进行了研究，以获得有关通过接触白色手杖来感知物体硬度的探索方法的基本知识。这项研究使我们能够研究提高物体感知准确性的方法，以及白色手杖的材料和结构。先前的研究表明，在确定物体硬度时，需要考虑来自白色手杖的听觉和触觉信息的作用。这项实验研究检查了人们仅通过白色手杖的敲击声感知物体硬度的能力（即，听觉信息）。使用两种类型的声音来估计硬度：1）记录的敲击声音的回放和2）现场敲击产生的声音。三种类型的手柄被用来制造用手杖敲击物体的不同声音。本实验的参与者是五名戴着眼罩的视力正常的大学生和两名拄着白色拐杖独立行走的全盲学生。结果表明，有视力的大学生和完全失明的参与者都能够仅通过白色手杖的听觉信息准确地判断物体的硬度。对于盲人参与者来说，不同的手柄显著影响了他们对物体硬度估计的准确性。
The white cane plays a vital role in the independent mobility support of the visually impaired. Allowing the recognition of target attributes through the contact of a white cane is an important function. We have conducted research to obtain fundamental knowledge concerning the exploration methods used to perceive the hardness of an object through contact with a white cane. This research has allowed us to examine methods that enhance accuracy in the perception of objects as well as the materials and structures of a white cane. Previous research suggest considering the roles of both auditory and tactile information from the white cane in determining objects' hardness is necessary. This experimental study examined the ability of people to perceive the hardness of an object solely through the tapping sounds of a white cane (i.e., auditory information) using a method of magnitude estimation. Two types of sounds were used to estimate hardness: 1) the playback of recorded tapping sounds and 2) the sounds produced on-site by tapping. Three types of handgrips were used to create different sounds of tapping on an object with a cane. The participants of this experiment were five sighted university students wearing eye masks and two totally blind students who walk independently with a white cane. The results showed that both sighted university students and totally blind participants were able to accurately judge the hardness of an object solely by using auditory information from a white cane. For the blind participants, different handgrips significantly influenced the accuracy of their estimation of an object's hardness.