Identification of Physical Factors Contributing to Hardness Perception of Objects During Indirect Tapping Using White Canes
Identification of Physical Factors Contributing to Hardness Perception of Objects During Indirect Tapping Using White Canes
复制标题
使用白手杖间接敲击过程中影响物体硬度感知的物理因素的识别
DOI：
10.1109/whc49131.2021.9517141
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
and Shuichi Ino
中科院分区：
文献类型：
--
作者：
Takeshi Tanabe;Kiyohiko Nunokawa;Kouki Doi;and Shuichi Ino
视障人士普遍使用白色手杖从周围环境中获取信息，从而独自行走。澄清目前的白手杖所提供的信息，可以使开发一种新的白手杖具有更好的可用性。先前的研究报告称，视障人士在使用白手杖间接敲击物体时，可以通过听觉和触觉同时感知物体的硬度。白色手杖和物体在被轻敲时以共振频率振动。白手杖的振动预期通过触觉来检测，物体的振动被转换成声音信息，通过听觉来检测。在这项研究中，我们确定了在使用白手杖间接敲击过程中影响物体硬度感知的物理因素。振动和声学信息的频率特性测量表明，不同硬度值物体的声学信息频率特性的相似性低于振动信息。这一结果支持了先前的研究结果，即听力在使用白手杖间接敲击中占主导地位。
Visually impaired people widely use white canes to obtain information from the surrounding environment and thereby walk alone. Clarifying the information presented by current white canes could enable the development of a new white cane with improved usability. Previous studies have reported that the visually impaired can better perceive the hardness of objects by using both hearing and tactile sensations when indirectly tapping objects using the white cane. The white cane and objects vibrate at the resonance frequency when they are tapped. The vibration of the white cane is expected to be detected through tactile sensations, and that of objects is converted into acoustic information and is detected through hearing. In this study, we identified the physical factors contributing to the hardness perception of objects during indirect tapping using white canes. Measurements of the frequency characteristics of the vibration and acoustic information revealed that the similarity of frequency characteristics for different hardness values of objects was lower for acoustic information than for vibration information. This result supports previous study results that reported that hearing is dominant in indirect tapping using white canes.