Supporting Accessible Data Visualization Through Audio Data Narratives

Supporting Accessible Data Visualization Through Audio Data Narratives
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通过音频数据叙述支持可访问的数据可视化

DOI:
10.1145/3491102.3517678
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发表时间:
2022
期刊:
CHI '22: Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems
影响因子:
--
通讯作者:
Follmer, Sean
Follmer, Sean
中科院分区:
--
文献类型:
--
作者:
Siu, Alexa;S-H Kim, Gene;O'Modhrain, Sile;Follmer, Sean

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在线数据可视化在向公众提供信息方面发挥着重要作用,但屏幕阅读器用户通常无法访问。为了解决在网络上提供直接的,多模态的,最新的访问数据的数据表示的需要,我们调查音频数据的叙述-结合联合收割机的文本描述和发音(映射的数据,非语音声音)。我们与屏幕阅读器用户进行了两次共同设计研讨会,以定义指导数据叙述的结构,内容和持续时间的设计原则。基于这些原则和相关的听觉处理特性,我们提出了一个动态规划方法来自动生成一个音频数据的叙述从一个给定的数据集。我们用16个屏幕阅读器用户来评估我们的方法。研究结果显示,通过音频叙述,用户从数据中获得了更多的见解。用户描述数据叙述有助于他们更好地提取和理解发音和描述中的信息。
Online data visualizations play an important role in informing public opinion but are often inaccessible to screen reader users. To address the need for accessible data representations on the web that provide direct, multimodal, and up-to-date access to the data, we investigate audio data narratives –which combine textual descriptions and sonification (the mapping of data to non-speech sounds). We conduct two co-design workshops with screen reader users to define design principles that guide the structure, content, and duration of a data narrative. Based on these principles and relevant auditory processing characteristics, we propose a dynamic programming approach to automatically generate an audio data narrative from a given dataset. We evaluate our approach with 16 screen reader users. Findings show with audio narratives, users gain significantly more insights from the data. Users describe data narratives help them better extract and comprehend the information in both the sonification and description.
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