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Ed Gellenbeck
Department of Computer Science
Central Washington University
400 East University Way
Ellensburg, WA 98926-7520

Office: Hebeler Hall 214E
Phone: (509) 963-1435
Fax: (509) 963-1449

Contact Information

P.T. Reader main content

Begun as a student capstone project in 2007-2008, the Portable Textbook Reader (P.T. Reader) has evolved into a Firefox Add-on used by college and high school students to listen to their textbooks.

CWU Access Technology Resource Center P.T. Reader


In Preparation: Speaking MathML: Using Prosody and Context-Sensitive Inferences to Produce Synthesized Speech

Gellenbeck, E and Stefik, A. (2009) Evaluating Prosodic Cues as a Means to Disambiguate Algebraic Expressions: An Empirical Study. Proceedings of the Eleventh International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2009), Pittsburgh, October 2009


Changing the face of e-text: Advances in creation, distribution, and voicing.
The 25th Annual International Technology & Persons with Disabilities Conference (CSUN 2010)
March 22-27, 2010, San Diego, California, USA
Central Washington University's Disability Services and Computer Science Department join forces to enhance alt-format distribution, accessibility and expand the capabilities of the DAISY format.
Download the CSUN 2010 Slideshow (as PowerPoint)

One University's Response to E-Text Legislation Arrives at Open-Source Solution for All!
The 32nd Conference of the Association on Higher Education And Disability (AHEAD 2009)
July 20-25, 2009, Louisville, Kentucky, USA.
Central Washington University's journey for compliance with Washington State e-text legislation facilitated development of a free open-source e-text reader available to the public. Come learn about this journey and how it's contributing not only to other Washington State institutions but also to the global cause of print accessibility. Participants of this session will learn about the inner workings of alternative format production at CWU, how one institution has responded to state e-text legislation, and how CWU's efforts could contribute directly to students success at other institutions
View the AHEAD 2009 Slideshow (as PDF)

Technology Demonstrations Washington Association on Postsecondary Education and Disability (WAPED) Fall 2008 Conference
October 15-17, 2008 at Central Washington University

Ed Gellenbeck, Department of Computer Science, CWU
400 E. University Way, Ellensburg, WA 98926-7520