Publications (17)2.19 Total impact
-
Conference Proceeding: Cross-Cultural Differences in the Use of In-vehicle Technologies and Vehicle Area Network Services: Austria, USA, and South Korea
[show abstract] [hide abstract]
ABSTRACT: Vehicle area network (VAN) communications and related services are getting more pervasive. However, even though user-centered design has been emphasized, VAN services have often been developed through a technology-driven approach. This paper presents cross-cultural survey results on VAN services in three different countries: Austria, USA, and South Korea. The current research compared the state-of-the-art of drivers’ current in-vehicle technology use and investigated their needs and wants for plausible new services in the near future. Further, we validated our next generation in-vehicle interface concepts stemming from our previous participatory design process [2]. Results showed clear differences between Austrians vs. Americans and Koreans. Even though Koreans and Americans in our survey were older than Austrians, they seemed more open-minded to VAN services (e.g., social networks in car, V2V services, in-vehicle agent, etc) in general and rated them more positively. Through these cross-cultural needs analyses of end users, designers and practitioners are expected to gain insights into developing a standardized service across cultures as well as culturally tuned in-vehicle interfaces. Moreover, we hope that this initial international collaboration can serve as a good test bed for future research and hope to expand our consortium with more colleagues in the AutomotiveUI community for further cross-cultural studies.Proceedings of 4th International ACM Conference on Automotive User Interfaces and Interactive Vehicular Applications (AutomotiveUI'12), October 17-19, Portsmouth, NH, USA; 10/2012 -
Article: Mental scanning of sonifications reveals flexible encoding of nonspeech sounds and a universal per-item scanning cost.
[show abstract] [hide abstract]
ABSTRACT: A mental scanning paradigm was used to examine the representation of nonspeech sounds in working memory. Participants encoded sonifications - nonspeech auditory representations of quantitative data - as either verbal lists, visuospatial images, or auditory images. The number of tones and overall frequency changes in the sonifications were also manipulated to allow for different hypothesized patterns of reaction times across encoding strategies. Mental scanning times revealed different patterns of reaction times across encoding strategies, despite the fact that all internal representations were constructed from the same nonspeech sound stimuli. Scanning times for the verbal encoding strategy increased linearly as the number of items in the verbal representation increased. Scanning times for the visuospatial encoding strategy were generally slower and increased as the metric distance (derived metaphorically from frequency change) in the mental image increased. Scanning times for the auditory imagery strategy were faster and closest to the veridical durations of the original stimuli. Interestingly, the number of items traversed in scanning a representation significantly affected scanning times across all encoding strategies. Results suggested that nonspeech sounds can be flexibly represented, and that a universal per-item scanning cost persisted across encoding strategies. Implications for cognitive theory, the mental scanning paradigm, and practical applications are discussed.Acta psychologica 07/2011; 137(3):309-17. · 2.19 Impact Factor -
Conference Proceeding: Enhancing electronic document accessibility using automatically generated graph descriptions and auditory graphs
Proceedings of the 26th Annual International Technology and Persons with Disabilities Conference (CSUN 2011), San Diego, CA; 03/2011 -
Article: Spindex (Speech Index) Improves Auditory Menu Acceptance and Navigation Performance.
TACCESS. 01/2011; 3:10. -
Conference Proceeding: Auditory menus are not just spoken visual menus: a case study of "unavailable" menu items.
Proceedings of the 28th International Conference on Human Factors in Computing Systems, CHI 2010, Extended Abstracts Volume, Atlanta, Georgia, USA, April 10-15, 2010; 01/2010 -
Conference Proceeding: Reducing repetitive development tasks in auditory menu displays with the auditory menu library
Washington, D.C., USA; 01/2010 -
Conference Proceeding: Designing effective sound-based aquarium exhibit interpretation for visitors with vision impairments.
Proceedings of the 12th International ACM SIGACCESS Conference on Computers and Accessibility, ASSETS 2010, Orlando, FL, USA, October 25 - 27, 2010; 01/2010 -
Conference Proceeding: Advanced Auditory Menus for Universal Access to Electronic Devices
Northridge, CA, USA; 01/2010 -
Conference Proceeding: "Spindex": Accelerated Initial Speech Sounds Improve Navigation Performance in Auditory Menus
[show abstract] [hide abstract]
ABSTRACT: Users interact with mobile devices through menus, which can include many items. Auditory menus can supplement or even replace visual menus. Unfortunately, little research has been devoted to enhancing the usability of large auditory menus. We evaluated a novel auditory menu enhancement called a textquotedblleftspindex" (i.e., speech index), in which brief audio cues inform the user where she is in a long menu. In the current implementation, each item in a menu is preceded by a sound based on the itemtextquoterights initial letter. 25 undergraduates navigated through an alphabetized contact list of 50 or 150 names. The menu was presented with text-to-speech (TTS) alone, or TTS plus spindex, and with the visual menu displayed or not. Search time was faster with the spindex-enhanced menu, especially for long lists. Subjective ratings also favored the spindex. Results are discussed in terms of theory and practical applications.San Antonio, TX; 10/2009 -
Conference Proceeding: Enhanced auditory menu cues improve dual task performance and are preferred with in-vehicle technologies.
Proceedings of 1st International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI 2009, in-cooperation with ACM SIGCHI, Essen, Germany, 21-22 September 2009; 01/2009 -
Article: Data density and trend reversals in auditory graphs: Effects on point-estimation and trend-identification tasks.
TAP. 01/2008; 5. -
Conference Proceeding: Sonification Sandbox Overhaul: Software standard for auditory graphs
Proceedings of the International Conference on Auditory Display, Montreal, Canada; 01/2007 -
Article: Brief training for performance of a point estimation sonification task
[show abstract] [hide abstract]
ABSTRACT: This study examined different types of brief training for a point estimation task with auditory graphs. Participants estimated the price of a stock at a specific times in a 10-hour trading day as depicted in a sonified graph of the stock price data. Forty Georgia Tech undergraduates completed a pre-test, an experimental training session, and a post-test for the point estimation task. In an extension of Smith and Walker [1], a highly conceptual, task analysis-derived method of training was compared to training paradigms that used either prompting of correct responses or feedback for correct answers during training. Two additional groups, one receiving only practice as training and another completing a filler task, were also included. Results indicate that practice with feedback for the point estimation task produced better post-test performance than all other training conditions.08/2002; -
Article: An agenda for research and development of multimodal graphs
[show abstract] [hide abstract]
ABSTRACT: Effective multimodal graphing tools can be beneficial to both sighted and visually impaired students and scientists. However, before this can become a reality, considerable research is required on the auditory graphing components. We suggest mappings, polarities, scaling, context, and training be studied in particular. We point to previous work in these areas and make suggestions for expanded research questions. We recommend that more complex and realistic data sets be used, and that visually impaired participants play a larger role in the research. The design of multimodal graphing software should be informed by empirical findings. Effective research and useful software tools will bring a broader perspective to data analysis for all who use graphs, regardless of visual ability.08/2002; -
Article: Encoding and representation of information in auditory graphs: Descriptive reports of listener strategies for understanding data
[show abstract] [hide abstract]
ABSTRACT: While a growing wealth of data have offered insights into the best practices for auditory display design and application, little is known about how listeners internally represent and use the information presented in auditory displays. At the conclusion of three separate studies, participants responded to an open-ended question about the strategies they used to perform auditory graphing tasks. We report a descriptive analysis of these qualitative responses. Participants' comments were coded by two raters along a number of dimensions that were chosen to represent a comprehensive set of encoding and task strategy possibilities. These descriptive analyses suggest that auditory graph listeners use a variety of strategies to cognitively represent the data in the display. Furthermore, these qualitative data offer a number of insights and questions for future research on information representation for auditory displays.07/2002; -
Article: Measuring the Use of Sound in Everyday Software
[show abstract] [hide abstract]
ABSTRACT: Members of the ICAD community might contend that auditory interfaces and even just well-designed sound in computer interfaces could be used more often than is currently the case. However, it is not entirely clear where, when, and how sound is actually being employed in everyday software. We discuss the development of a long-term research project aimed at identifying and categorizing sound use in software. Our mixed-methods approach explores software artifacts from three perspectives: detailed program behavior, source code word count of audio terms, and audio infrastructure. These complementary approaches could provide a deeper understanding of sound use today and, we hope, lead to predicting, guiding, and improving the future trajectory of its use.04/2002; -
Conference Proceeding: Accessible graphs at the Thika School for the Blind
Top co-authors
Top Journals
Institutions
-
2–2012
-
Georgia Institute of Technology
- School of Psychology
Atlanta, GA, USA
-
