检查由于行走时头部旋转而引起的声区间差异如何改善视力障碍者之间的听觉障碍感知距离:小规模盲人小组的案例研究
Takahiro Miura1, Naoyuki Okochi2, Masaki Matsuo3
1National Institute of Advanced Industrial Science and Technology (AIST), Kashiwa 277-0882, Japan.
Life (Basel, Switzerland)
|March 28, 2024
概括
盲人在走路时比站立时更好地感知障碍物. 这项研究表明,声间强度差异 (IID) 和声间色差异 (ICD) 是在运动过程中感知障碍物距离的关键声学线索.
科学领域:
- 听觉感知是一种听觉感知.
- 人与计算机的交互
- 生物医学工程 生物医学工程
背景情况:
- 视力受损的个人利用视力受损的个人.
- 感觉障碍物,感觉障碍物,感觉障碍物.
- 通过听觉来检测障碍物.
- 这种感觉在移动过程中得到增强,但基本的声学机制尚未完全理解.
- 了解这些机制对于开发辅助技术至关重要.
研究的目的:
- 调查有助于视力障碍者障碍感觉的声学因素.
- 具体来说,确定头部旋转和声学特征在走路时障碍物距离感知中的作用.
- 识别最重要的声学线索,以提高移动过程中的空间意识.
主要方法:
- 对盲人参与者的障碍距离定位进行比较实验,当他们站立或走路时.
- 在行走过程中分析头部旋转角度和声学特征 (声学色彩,声间差异).
- 对时间 (ITD),强度 (IID) 和颜色 (ICD) 之间的听觉差异的听觉值的确定,相对于头部旋转.
主要成果:
- 与站立相比,在步行时障碍距离定位的准确性明显更高.
- 在盲人参与者中观察到声学色彩,光谱声间差异和声间强度差异.
- IID和ICD的值与特定的头部旋转角度有关 (IID为9.17°,ICD为6.30°),这表明它们在距离感知中的作用.
结论:
- 运动能显著改善视力障碍者对障碍物距离的感知.
- 声间强度差异 (IID) 和声间色差异 (ICD) 可能是行走时使用的关键声学线索.
- 这些发现可以为视力受损者设计先进的基于听觉的导航辅助工具提供信息.
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