Walker, Bruce N.

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Now showing 1 - 3 of 3
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    Evaluation of a non-visual auditory choropleth and travel map viewer
    (Georgia Institute of Technology, 2022-06) Biggs, Brandon ; Toth, Christopher ; Stockman, Tony ; Coughlan, James M. ; Walker, Bruce N.
    The auditory virtual reality interface of Audiom, a web-based map viewer, was evaluated by thirteen blind participants. In Audiom, the user is an avatar that navigates, using the arrow keys, through geographic data, as if they are playing a first-person, egocentric game. The research questions were: What will make blind users want to use Audiom maps? And Can participants demonstrate basic acquisition of spatial knowledge after viewing an auditory map? A dynamic choropleth map of state-level US COVID-19 data, and a detailed OpenStreetMap powered travel map, were evaluated. All participants agreed they wanted more maps of all kinds, in particular county-level COVID data, and they would use Audiom once some bugs were fixed and their few recommended features were added. Everyone wanted to see Audiom embedded in their existing travel and mapping applications. All participants were able to answer a question evaluating spatial knowledge. Participants also agreed this spatial information was not available in existing applications.
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    Highcharts Sonification Studio: an online, open-source, extensible, and accessible data sonification tool
    (Georgia Institute of Technology, 2021-06) Cantrell, Stanley J. ; Walker, Bruce N. ; Moseng, Øystein
    The Highcharts Sonification Studio is the culmination of a multi-year collaboration between Highsoft — the creators of Highcharts — and the Georgia Tech Sonification Lab to develop an extensible, accessible, online spreadsheet and multimodal graphing platform for the auditory display, assistive technology, and STEM education communities. The Highcharts Sonification Studio leverages the advances in auditory display and sonification research, as well as over 20 years of experience gained through research and development of the original Sonification Sandbox. We discuss the iterative design and evaluation process of the Highcharts Sonification Studio to ensure usability and accessibility, highlight opportunities for growth of the tool, and its use for research, art, and education within the ICAD community and beyond.
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    To sonify or not to sonify? Educator perceptions of auditory display in interactive simulations
    (Georgia Institute of Technology, 2021-06) Fiedler, Brett L. ; Walker, Bruce N. ; Moore, Emily B.
    With the growing presence of auditory display in popular learning tools, it is beneficial to researchers to consider not only the perceptions of the students who use the tools, but the educators who include the tools in their curriculum. We surveyed over 4000 educators to investigate educator perceptions and preferences across four interactive physics simulations for the presence and qualities of non-speech auditory display, as well as surveying users' selfrated musical sophistication as potentially predictive of auditory display preference. We find that the majority of teachers preferred the simulations with auditory display and consistently rated aspects of the experience using simulations with sound positively over the without-sound variants. We also identify simulation design features that align with trends in educator ratings. We did not find the measured musical sophistication to be a predictor of auditory display preference.