Eyes-free environmental awareness for navigation
Eyes-free environmental awareness for navigation
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DOI：
10.1007/s12193-011-0065-5
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发表时间：
2012-05-01
影响因子：
2.9
通讯作者：
Cooperstock, Jeremy R.
中科院分区：
文献类型：
--
作者：
El-Shimy, Dalia;Grond, Florian;Cooperstock, Jeremy R.
我们认为，提供基于位置的信息，通过丰富的音频表示的环境，以及相关的机会，这种方法提供支持导航任务的挑战。这一挑战由现场音频服务（ISAS）解决，该系统主要供盲人和视障社区使用。它采用空间化音频渲染来传达相关内容，这些内容可以包括关于周围环境的信息，例如餐馆、文化场所、公共交通位置和其他兴趣点。信息主要从在线数据资源中汇集，使用文本转语音技术进行转换，并通过位置感知移动终端或智能手机“显示”，或者作为语音，或者作为更抽象的音频图标。这不仅适合于目标人群的特定约束，而且对于视觉注意力被导航占据的一般移动的用户同样有用。我们设计并进行了一项实验，以评估两种技术，通过交互式听觉地图提供空间化的音频内容给用户：冲击波模式和雷达模式。虽然这两种模式被证明是显着优于其他，科目证明在导航地图使用这些渲染策略的能力，并作出积极的反应，该系统，表明空间音频可以是一种有效的技术，用于传达基于位置的信息。这个实验的结果和它对我们的项目的影响在这里描述。
We consider the challenge of delivering location-based information through rich audio representations of the environment, and the associated opportunities that such an approach offers to support navigation tasks. This challenge is addressed by In-Situ Audio Services, or ISAS, a system intended primarily for use by the blind and visually impaired communities. It employs spatialized audio rendering to convey the relevant content, which may include information about the immediate surroundings, such as restaurants, cultural sites, public transportation locations, and other points of interest. Information is aggregated mostly from online data resources, converted using text-to-speech technology, and "displayed", either as speech or more abstract audio icons, through a location-aware mobile device or smart-phone. This is suitable not only for the specific constraints of the target population, but is equally useful for general mobile users whose visual attention is otherwise occupied with navigation. We designed and conducted an experiment to evaluate two techniques for delivering spatialized audio content to users via interactive auditory maps: the shockwave mode and the radar mode. While neither mode proved to be significantly better than the other, subjects proved competent at navigating the maps using these rendering strategies, and reacted positively to the system, demonstrating that spatial audio can be an effective technique for conveying location-based information. The results of this experiment and its implications to our project are described here.